Mina Babazadeh; Fatemeh Narges Zar
Volume 20, Issue 78 , August 2011, , Pages 74-79
Abstract
Tourism is an economic sector sensitive to the weather, and in some cases the dependence on climatological characteristics of the demand for tourism is both the source of its emergence and its limiting factor. Climate has an impact on the recreation and tourist sector and in some areas represents a natural ...
Read More
Tourism is an economic sector sensitive to the weather, and in some cases the dependence on climatological characteristics of the demand for tourism is both the source of its emergence and its limiting factor. Climate has an impact on the recreation and tourist sector and in some areas represents a natural source based on which the tourism industry is predicted. All climatic elements play a role in the health, comfort and recreation of the people, and in attracting tourists, but the role of some elements including temperature, relative humidity, sunshine and wind are more important, which are consequently considered in this article. The impact of climatic attractions and obstacles on tourism is very important. In this paper, using the method of the Tourism Climate Index (TCI), the comfort and convenience of people in different months of the year has been calculated, using the statistics of the synoptic station of Shiraz in a 54-year statistical period, In such a way that it can determine the effect of comfort in attracting tourism in Shiraz. The TCI, which is the combined effect of climatic parameters, shows that the cool and very cool comfort coefficient is associated in most months of the year with temperatures below 20 ° C, and the months of May and September have excellent degrees of comfort, and through the rest of the months the degree of comfort is good or very good, that is within the acceptable conditions in terms of the tourists comfort. The seasonal distribution of tourist weather indicates that Shiraz has a spring peak of distribution, and it has almost the best distribution of tourist weather throughout the year, except for the cold months of the year. In general, climate has a strong impact on tourism, to a degree that it is shown that in many areas, the tourism industry is prosperous without required natural resources, due to the good weather there, and sometimes it can change the destinations of tourism through the competition among travel agencies .
Iraj Maghfuri Moghaddam; Mahmud Jalali
Volume 11, Issue 44 , February 2002, , Pages 76-80
Abstract
Extinction is one of the important phenomena in the evolution of organisms. Extinction of a species occurs when organisms cannot adapt to sudden changes in the environment. The Earth is a very dynamic planet and resists many external changes leading to the stability of biological conditions. But in some ...
Read More
Extinction is one of the important phenomena in the evolution of organisms. Extinction of a species occurs when organisms cannot adapt to sudden changes in the environment. The Earth is a very dynamic planet and resists many external changes leading to the stability of biological conditions. But in some cases environmental changes are very severe. Among the most important factors of environmental changes is the collision of Meteorites to the surface of the Earth. In the early Cretaceous and the Late Eocene, the Earth was exposed to several Meteorites, which resulted in destruction of many creatures. In all Meteorites, the amount of iridium element is much higher than that of land deposits.Therefore, by finding more than the usual quantities of iridium on the Earth's layers, it can be held as possible that a Meteorite has hit the ground. Of course, it should be noted that in some cases the element of iodine accumulates in some sediments due to diagenetic factors.
Jamal Mohammadi; Younos Gholami
Volume 20, Issue 79 , November 2011, , Pages 88-94
Abstract
Authentication refers to a change in the structure, including that of social and demographic changes in the state of the area within the city's general layer. This theory is an important theory in changes in social groups in recent decades. In fact, the physical and economic changes of metropolitan and ...
Read More
Authentication refers to a change in the structure, including that of social and demographic changes in the state of the area within the city's general layer. This theory is an important theory in changes in social groups in recent decades. In fact, the physical and economic changes of metropolitan and suburban centers, especially in the major cities of the Western countries, have led to demographic changes. Given the importance of this issue, the purpose of this paper is to examine the role of authentication in social class changes in cities, especially urban centers. To investigate, we have tried to analyze and analyze these changes using various sources of internal and external resources and available secondary resources. The results of this study show that by imposing policies such as rent control, establishment of public institutions and tax rebates, the negative effects of authentication can be reduced.
Kiomarth Maleki; Farhad Barandkam
Volume 21, Issue 81 , April 2012, , Pages 91-103
Taghi Tavousi; Mahmood Hoseynzadeh Kermani
Volume 22, SEPEHR , July 2013, , Pages 92-95
Abstract
In recent years, fequency of dust storms has increased. Dust storms can influence and change the environment, result in huge damages for human societies. Correct monitoring of disasters is an essential need. The present article monitor dust storm processes in April, 2006. The dust storm zone was extracted ...
Read More
In recent years, fequency of dust storms has increased. Dust storms can influence and change the environment, result in huge damages for human societies. Correct monitoring of disasters is an essential need. The present article monitor dust storm processes in April, 2006. The dust storm zone was extracted concisely based on reflection features and dust storm absorption. Their intensity levels were estimated. Then, their moving directions were monitored using multi temporal data. Results indicate high consistency with the monitoring performed by meteorological group. To sum up, dynamic monitoring of dust storm processes with multi temporal data will be very useful in future.
Seyyed Mohammad Zamanzadeh; Mona Anoosheh
Volume 22, Issue 87 , November 2013, , Pages 93-98
Abstract
Arid and semi-arid areas of the world are located between 20 to 45 degrees north and south latitude. Iran is also located in this area which is referred to as the world’s desert belt. Identifying these zones is the most fundamental and basic thing to do. In Iran’s arid zones, huge masses ...
Read More
Arid and semi-arid areas of the world are located between 20 to 45 degrees north and south latitude. Iran is also located in this area which is referred to as the world’s desert belt. Identifying these zones is the most fundamental and basic thing to do. In Iran’s arid zones, huge masses of running sand are compacted in different places.
In local language, these sand masses are called pebbles. The study area includes Band-e rig Kashan sand dunes, located in Chale Masile, south of Namak Lake. In the present article, we try to study wind environments by exploring the geomorphology, sampling and grading the elements of sand dunes. Surveys include local data collection and sampling of sand dunes. Statistical factors and sedimentology were calculated by GRADISTAT software and deposit grading curves were created. Deposit grading indicates that deposits in 4 points of the sand dune have a sorting difference of 0.327 φ and this difference is due to the position of deposit withdrawal and wind power.
Atiyye Sadat Saberi
Volume 21, Issue 83 , November 2012, , Pages 94-96
Abstract
The present article considers specific challenges modern, postmodern and electronic cities cause from a spatial perspective and finds that virtual space of electronic city aid real urban space, prepare a plan for it and reduce its dimension in accordance with the scale, size and need for focus and variety. ...
Read More
The present article considers specific challenges modern, postmodern and electronic cities cause from a spatial perspective and finds that virtual space of electronic city aid real urban space, prepare a plan for it and reduce its dimension in accordance with the scale, size and need for focus and variety. People’s specific attitude transform the real and virtual space in every geographic space and create a specific geography in each of these spaces.
Hossein Haddadi; Hassan Heydari
Volume 21, Issue 82 , September 2012, , Pages 99-103
Abstract
Heavy rainfalls with thunder is an environmental phenomenon in Western part of the country. Western areas of the country are potentially prone to heavy thunder stones, since they face the direction of Western Winds and Mediterranean humidity and also because of the Zagros Elevations. Upper atmosphere ...
Read More
Heavy rainfalls with thunder is an environmental phenomenon in Western part of the country. Western areas of the country are potentially prone to heavy thunder stones, since they face the direction of Western Winds and Mediterranean humidity and also because of the Zagros Elevations. Upper atmosphere data in the National Center of Environmental Prediction was used for synoptic study of the heavy rainfall on May 2nd, 2010. The condition of atmosphere during the heavy rainfall was analyzed by computational and graphical methods. Results of the synoptic analysis indicates that factors like blocking and twist in 500, 600 and 700 hPa, instability, convection in all atmospheric levels from 500 to 1000 hPa and positive vorticity in 500, 600, 700, 850 hPa were among affective factors in the occurrence of heavy rainfall on May 2nd 2010. According to the humidity-wind maps, the humidity resources of this heavy rainfall were located in 1000 to 850 Persian Gulf alignments and 700, 600, and 500 hPa of the Mediterranean Sea and the Red Sea.
Farhad Azizpour; Roghayyeh Shamsi
Volume 23, Issue 89 , May 2014, , Pages 106-112
Abstract
Factors of the natural-ecologic, social, economic, historical and political environment affects formation, establishment and organization of rural environments. Thus, the present article seeks to clarify the influence of natural elements (natural-ecologic environments) in transformability of spatial ...
Read More
Factors of the natural-ecologic, social, economic, historical and political environment affects formation, establishment and organization of rural environments. Thus, the present article seeks to clarify the influence of natural elements (natural-ecologic environments) in transformability of spatial organization in 11 rural districts of Lavasan-e Kuchak village. Descriptive-analytic methods and secondary-research methods are used for collecting information. Moreover, models like Gatman institutional measurement, value of centrality, total minimum distance, number of direct links, number of communicative nodes and demographic capacity are also considered. Results indicate that natural elements, especially topography, water resources and slope have influenced the position of rural settlements. This has resulted in the spatial organization of the study area possessing a two-level hierarchical structure. Moreover, based on the results it is suggested to form spatial organization of the area with three rural areas of Afje, Kantiya and Bujan villages and a rural complex of Lavasan city.
Shabnam Mahmoodi
Volume 22, SEPEHR , April 2013, , Pages 110-112
Abstract
In the present article, uniformitarianism is discussed as one of the theories related to the changes in geology phenomena. Furthermore, its contrast with neo-catastrophism, catastrophism and evolution will be presented using a documentary method.
Read More
In the present article, uniformitarianism is discussed as one of the theories related to the changes in geology phenomena. Furthermore, its contrast with neo-catastrophism, catastrophism and evolution will be presented using a documentary method.
Fatemeh Mohammadyari; Hossein Aghdar; Reza Basiri
Abstract
Abstract[1]
Groundwater is of particular importance in arid and semi-arid areas.In this research, chemical properties of groundwater in arid and semi-arid regions of Mehran and Dehloran were studied using geo-statistical methods.Sodium, chlorine, sulfate, TDS and TH were evaluated variables.The ...
Read More
Abstract[1]
Groundwater is of particular importance in arid and semi-arid areas.In this research, chemical properties of groundwater in arid and semi-arid regions of Mehran and Dehloran were studied using geo-statistical methods.Sodium, chlorine, sulfate, TDS and TH were evaluated variables.The semi-variogram of each parameters were calculated using GS + software and different models were fitted.After the normalization of the data, the variogram was plotted, and the interpolation was carried out by the method ofIDW and kriging in GIS software. The criterion for choosing an appropriate interpolation model was a lowerRMSE and a stronger spatial structure. The results show that the Kriging method is superior to the IDW method.Therefore maps were prepared using this method. The results show a strong correlation of the qualitative data of the region's water and the spatial structure is a Gaussian model function.Finally, by using fuzzy logic and Shouler classification, a zoning map of the area for drinking was prepared.According to the final map, 37% of the area is suitable for drinking, 13% is relatively suitable and 50% is inappropriate.As a result, the water quality of the area studied,is not desirable for drinking. Overlaying of the zoning map and the map resulted from the analysis of the obvious points showed that the points with high concentrations and on the threshold of the alert are placed side by side and in the wrong category of the zoning map.High levels of hardness rate and other elements in parts of the region are increasing.This is due to the substitution of alluvial deposits with Gachsaran Formation.Therefore, the main factor for the reductionof the water’s quality can be Gachsaran formation.
[1] - به دلیل کیفیت نامناسب متن چکیده مبسوط انگلیسیِ ارائه شده توسط نویسنده مسئول مقاله، نشریه به ناچار اقدام به ترجمه مجدد متن چکیده فارسی و انتشار آن به جای چکیده مبسوط انگلیسی نموده است.
Ehsan Yari; Vahid Abdalipour
Abstract
Extended Abstract 1. Introduction From the ancient times, border disputes and territorial expansionism have always existed between countries and states and they have been the main factors for creation of conflicts and wars among them. The first step towards fixing boundaries was taken in Europe ...
Read More
Extended Abstract 1. Introduction From the ancient times, border disputes and territorial expansionism have always existed between countries and states and they have been the main factors for creation of conflicts and wars among them. The first step towards fixing boundaries was taken in Europe by Westphalia treaty. Fixing boundaries and resolving border disputes in Europe were not completed even after the Second World War and continued untilthe collapse of theSoviet Union. But, in most regions of the world such as the Persian Gulf, we can observe countless conflicts in the field of territorial and border issues. These regions from the advent of its southern margin countries, have always been the scene of many conflicts and disputes, and approximately all Arab countries of this region have border disputes with each other and most of these disputes have remained stable so far. In this article, we try to answer this question that: what is the main reasonfor Arab countries' disappointment in the Persian Gulf region to settle the border disputes among themselves? 2. Research methodology The Research methodology is analytical- descriptive and library method was used in collecting the required information and data. 3. Results & Discussion 3-1.the procedure of creating region's borders The collapse of Turkish Empire and decades after that is a very important era for Middle East. What happened in these decisive decades is the apparent sovereignty of European on the region that changed and redraw the international borders and led to the advent of new countries. In the central Middle East, the intervention of European powers had the most influence on political map of the region. In the Persian Gulf, by undertaking contracts that Britain imposed on the sheikhdoms in the South coast of the Persian Gulf from the early nineteenth century, the region was completely under British rule. So, this colonial power determined the region's borders in order to gain its goals. 3-2. border- territorial disputes among Arab countries of the region The borders of this region consist of sea and land borders. In this writing, we stress specially on the land borders and then deliberate the discrepancies between them. The disputes between Saudi Arabia – Oman and Abu Dhabi about Buraimi Oasis: Buraimi Oasis includes nine villages that have a mixture of tribal descents. By using the tribal nationalities, Abu Dhabi – Oman and Saudi Arabia could claim all or a part of Buraimi Oasis. In 1955, on behalf of Abu Dhabi, Britainset up a border without Saudi approval. In 1974 United Arab Emirates (UAE) and Saudi Arabia compromised on the 1955 ridge. The border between Oman and Abu Dhabi was drawn; so that the six villages of Buraimi remained in Abu Dhabi and three villages remained in Oman. But in 2005, the border disputes between Saudi Arabia and the UAE on the Buraimi Oasis restarted again. Territorial disputes between Iraq and Kuwait: With the independence of Kuwait from Britain, Iraq has consistently claimed the sovereignty over the Sheikhdom on the basis that Kuwait was part of Basra in the Turkish era. Iraq also has some claims about Warbah and Bubiyan islands. Indeed, the most important reason for Iraq to attack Kuwait was her lack of free access of to the Persian Gulf. Another factor that had influenced Iraq policy towards Kuwait wasits access to the oil fields. The territorial disputes between Saudi Arabia and Qatar: In 1992, Saudi Arabia and Qatar had long border disagreements. Riyadh and Doha concealed their disputestemporarily by signing an agreement. In July 2008, Saudi Arabia and Qatar agreed to resolve the Khawr al Udayddisputes between the UAE, Saudi Arabia and Qatar. But, the State of the UAE besides protesting to Qatar, associated any determination of the borders in the Khawr al Udayd region to the agreement with this country. The procedure of foresaid disputes has been continued practically. Saudi Arabia tries to access the Persian Gulf's coastlines in Qatar peninsula and then access the largestin operation gas fields in the world. The territorial disputes between Saudi Arabia and Yemen: The first border agreement between Saudi Arabia and Yemen which is known as 'Taif', was signed in 1934. In 2000, Yemen signed the Jeddah agreement with Saudi Arabia and recognized Taif agreement state in order to reduce tensions and Saudi Arabia's interventions. But, the tensions between the two countries did not end by this agreement. Indeed, the disputes between the two countries include vast areas. Yemen has territorial claims on three oil rich provinces such as:Asir- Najran and Jizan currently handled by Saudi Arabia; on the other side, the territorial claims of Saudi Arabia on Yemen are broader and include the oil rich province of Hadhramautin Yemen which has strategic importance due to its location near the Indian ocean. The territorial disputes between Saudi Arabia and Kuwait: The disputes between Kuwait and Saudi Arabia dates back to the early twentieth century and the claims of Ibn Saud on Kuwait. The last border agreement between Saudi Arabia and Kuwait took place in 2000. Iran and Iraq are opposed to this agreement. Iran protests to this agreement because this agreement virtually violated the agreement of Iran and England (Arab's foreign policy officer) in 1965. Also, by regarding the agreement of Kuwait and Saudi Arabia on commonly use of stratum and substratum resources on the two sides of the border, Saudi Arabia practically enters to the shared oil and gas resources between Kuwait and Iran. The disputes between Saudi Arabia and Iraq: In January 1991, Western allied forces led by the US, attacked Iraq from the Northeast of Saudi Arabia. Iraq canceled all its international agreements with Saudi Arabia signed since 1968. This action included the border agreements of 1975 and 1981. In the summer of 1991,Saudi Arabia submitted all its border treatydocuments with Iraq to the United Nations. While Saudi is not willing to settle its border disputes with its neighbors because of its land claims on the Persian Gulf's sheikhdoms due to its territorial expansionism, the fear of Saddam Hossein made Saudis to recognize the past treaties. The disputes between Qatar and Bahrain: Mutual claims of Bahrain and Qatar over the possession of Hawarislands is the greatest dispute that put the two States on the threshold of a perfect war in 1986. Finally the issue was referred to the International Court of Justice. The court eventually gave its verdict on the territorial disputes between the two States in 2001. But, border disputes was heated upagain in 2010. In this dispute although territorial expansionism trends between the two neighbors towards some parts of each other's soil were clear, the strategic situation of tourist islands of Hawar that have oil resources, have had the most influence in creation of disputes between the two States. 4. Conclusion The border and territorial disputes in the Persian Gulf are being seenin a high level. The presence of European colonialists especially the British that handled the region from the early nineteenth century and appointed all the borders of the region in line with their imperialist benefits, has a great influence on the creation of these disputes. After 1971 when Britain left the Persian Gulf, border and territorial disputes among the region's states started and led to numerous conflicts. Most of these disputes have remained up to now. There are some factors that impede consensus among the countries of the region to form an eventual and stable solution for settling the border disputes. But, the reason for this article is stressing on the two important and effective factors in this context one of which is expansionism trend among the Arab countries in the Persian Gulf's zone and the other is the strategic situation of the conflict areas in terms of oil discovery and military situations. Saudi Arabia and Iraq and partly less, other sheikhdoms are the objective examples in this field. So, aggression of Saudi Arabia against Yemen and occupation of Asir area, military aggression against Abu Dhabi and Oman and occupation of Buraimi area, transgression against Qatar and occupation of the southern part of this State and its territorial greed towards Kuwait are arisen from this policy. Although Saudi Arabia prefers to actualize its policy by regional convergence, but in several cases, using vigor and military force shows its powerful expansionism leanings. Iraq's aggression against its neighbors in the Saddam era can also be evaluated in the form of Baghdad's expansionism policies because of queering in geopolitical – strategic straits and economic profits such as seizing the oil income of Kuwait and Iran's Khuzestan. These two factors with low and high intensity can be generalized to the otherPersian Gulf's sheikhdoms.
Leila Eshrati; Amir Mahmoodzadeh; Masoud Taghvaei
Abstract
Extended Abstract
Many built-up areas are threatened by multiple hazards which pose significant threats to humans, buildings and infrastructure. However, the analysis of the physical vulnerability towards multiple hazards is a ...
Read More
Extended Abstract
Many built-up areas are threatened by multiple hazards which pose significant threats to humans, buildings and infrastructure. However, the analysis of the physical vulnerability towards multiple hazards is a field that still receives little attention, although vulnerability analysis and assessment can contribute significantly to risk reduction efforts. In this paper, an indicator-based vulnerability approach, the PTVA (Papathoma Tsunami Vulnerability Assessment), was further developed to be applicable in a multi-hazard context. The resulting multi-hazard version of the PTVA consists of four steps: the identification of the study area and relevant hazards as well as the acquisition of hazard information, the determination of vulnerability indicators and collection of data, the weighting of factors and vulnerability assessment, and finally, the consideration of hazard vulnerability. After the introduction of the newly developed methodology, a pilot application is carried out in a part of Shiraz municipality located in the Iran. In this case study the vulnerability of buildings and humans is assessed. The implementation of the methodology leads to reasonable results indicating the vulnerable buildings and supporting the priority setting of different end-users according to their objectives. The constraints of the presented methodology are: a) the fact that the method is not hazard-intensity specific, thus, vulnerability is measured in a rather qualitative and relative way, b) the high amount of data required for its performance, and c) Indicator-based vulnerability approaches are flexible and can be adjusted to the different hazards as well as to specific user needs.
Introduction
Multi hazard pose a serious threat to human life. It can cause considerable damages. The evaluation of the expected losses due to multi hazard requires a risk assessment. Multi-hazard risk assessment allows the identification of the most endangered areas and suggests where further detailed studies have to be carried out.
Aim: This study aims to give a new methodology for Multi-Hazard Risk Assessment that makes the comparability analysis of vulnerability easier for different hazards and accounts for possible triggering (domino) effects.
Methodology
Methods used in this paper are based on theoretical approach and documentation. Two types of hazards will be assessed, namely earthquake and fire following earthquake.
Statistical Analysis: Semi-quantitative and quantitative approach would assess risk rates at both regional and local levels.
Results and discussion
In this study, representation of a new methodology for multi hazards risk assessment includes determination of a model with parameters, consideration of the indicator-based pattern of vulnerability assessment that selected all of the relevant indicators and presented new classification of indicators based on comparison to different hazards and possible triggering (domino) effects. This means that a potential multi-hazard indicator could be higher than the simple aggregation of single risk indicators calculation.
Conclusion
The focus is on establishing a general overview of the emerging issues, and indicating how hazard relations can be considered in multi-hazard studies. The hazard relations are identified and studied by means of a new method and the overlay of hazard areas to determine overlaps in final multi hazards map.
Sedighe Kianisalmi; Seyyed Hojjat Musavi; Parisah Yeganeh Dastgerdi
Abstract
1- Introduction
One-sided, unbalanced and unplanned development of cities, population and activity in the area, has left a great deal of the country's capacity useless, and has imposed a lot of problems on planners at different levels (ahmadi et.al,1389: 94). In order to achieve sustainable development, ...
Read More
1- Introduction
One-sided, unbalanced and unplanned development of cities, population and activity in the area, has left a great deal of the country's capacity useless, and has imposed a lot of problems on planners at different levels (ahmadi et.al,1389: 94). In order to achieve sustainable development, describing and assessment of the state of the environment and resources is necessary before any planning (movahhed, 1385: 11). Tourism, especially ecotourism is also no exception. Ecological potential assessment of tourism areas to use have been identified as a tool to achieve sustainable development (jowzi et al. 1388:71). In order to achieve sustainable development, land planning is essential and the infrastructure of this planning is environmental assessment, ecological potential assessment, measurement and potential of land with clear and pre-planned criteria. In this regard, from the 1960s, the geographic information system was established with a tangible progress in the spatial planning of land use to accelerate the development of various methods for determination of land ability for different uses.
In this study we have tried to define ecotourism potential, using assessment of Environmental Ecological potential in Chaharmahal and Bakhtiari Province to provide a dynamic setting for the development of the region. Therefore, because of an abundance of natural attractions such as wetlands, lakes, waterfalls, springs, rivers, mountains and peaks, caves, plains and forests, as well as historical- cultural attractions, such as bridges, villages and castles, there is a great potential to attract many visitors. In this study,it is attempted that with the use of GIS and ecological potential assessment model for establishment of tourism in the region, the potential can be investigated. The necessity and importance of this research is the factthat despite the unique characteristics of the province, especially in terms of nature, which can play a more active role in the economic, social and cultural area, and despite these diverse and valuable attractions, unfortunately less attention has been paid to this attractions so with a good planning and suitable using of available resources, the region can be developed sustainably.
2- Material and Methods
In Makhdoom systemic approach, ecological tourism model is provided for intensive and extensive outing (firoozi et al, 1392: 159). At this stage, by using collected data in the phases of analysis and conclusions in the environmental units with ecological models built for the user, the most appropriate activities are selected. Based on the results of investigations in Iran and the countries that are ecologically similar to Iran, a set of ecological models have been produced inIran which can be compared and measure ecological information about the model and determine the type of actions which should be taken. The model was used to determine the usages of the ecological models of agriculture - pasture, forestry, rural-, urban-industrial development, ecotourism, intensive tourism and aquaculture (Makhdoom, 1385: 185-212). This study seeks to find areas suitable for ecotourism (suitable Class A, suitable Class B and inappropriate). Therefore, suitable areas for loading the proposed activities appropriate to the potential of the region's stability have been identified, taking into account variables such as slope, rock and soil, aspect, water, plants, climate and weather and also preparation of needed maps.
3-Result and Discussion
In order to determine the ecological potential for ecotourism development in Chaharmahal and Bakhtiari Province, according to the preference of parameters in terms of importance in Makhdoom model (makhdoom, 1380: 203), first, slope map was developed in 9 classes using digital elevation model map and using the capabilities of ArcGIS. In the next stage, soil and rock condition was evaluated and the map was prepared. After determining the soil groups in the province, suitable areas for ecotourism class A, with suitable soil which is placed in Inceptisoils category, was separated. Climate is another factor considered in the assessment of ecological potential. In this context, the average temperature in warm period in the provinceis calculated. Since proper temperature during warm period for extensive recreation class A is 21-25 degrees Celsius, this feature was introduced in the attribute table. The next parameter is the number of sunny days. For extensive recreation class A for spring and summer seasons, the number of sunny days have to be more than 15 days per month. The last parameter is water. For extensive recreation class A, water level must be 5-12 liters per person. Citing the fact that the province, in terms of water resources is rich and has good precipitation, water levels parameter in the province was considered desirable.
In the last stage, all obtained maps, are mutually overlaid and finally a map is obtained,in which all the necessary conditions for an extensive recreation class A are introduced and shows all the suitable areas for extensive tourism.
4-Conclusion
After overlaying Maps and finishing ecological potential assessment process, it was found that a rather wide region of the province is suitable for developing ecotourism. According to the calculations done, about 32.1961square kilometers of the province is found suitable for extensive recreation (class A), the city of LORDEGAN has the largest share of the relevant regions and the city of BOROUJEN has the lowest share, respectively.
bahare hajizade vadeghani; jahanbakhsh balist; saeed karimi
Abstract
Extended Abstract Introduction Paying attention to sustainable urban physical development in urban development programs indicates the importance of this issue in strengthening the cultural, social and physical aspects of the city. Developers in developing countries have deeply realized that infrastructure ...
Read More
Extended Abstract Introduction Paying attention to sustainable urban physical development in urban development programs indicates the importance of this issue in strengthening the cultural, social and physical aspects of the city. Developers in developing countries have deeply realized that infrastructure services and facilities have also played a major role in improving the development of urban and rural areas in these countries, and emphasizes this. Finding out that improving the access of urban and rural communities to basic services is an important tool in accelerating regional development, and accepts that location-based services, in addition to impacting costs in Efficiency and utilization and their quality are also effective. A lot of research has been done in the field of location, including the study of Sin et al. (2002) aimed at evaluating urban land use structures with an eye to sustainable development. Simpleiara et al. (2004) examined the dynamics and modeling of urban expansion with the help of GIS in the city of Manglor, India, and predicted the type of future expansion of the city. Vanakata Subways (2007) completed the article entitled "Analysis of Places for Urban Development using GIS" (Chang, 2008) using GIS and Land Multi-Fuzzy Decision-Making Model Has identified susceptible people for the establishment of an urban forest in Harlingen. The importance and necessity of this research in the lack of methods are suitable models for locating human settlements. In decision-making for the development of human settlements, all the criteria and parameters required and involved in structured and structured models should be considered in the form of up-to-date models. The purpose of the research is to develop a suitable model for determining the appropriate sites for the development of human settlements. In this research, we have been asked to answer the following question. Is the city of Kashan capable of urban development and, if so, what is its potential and in what districts? Materials and methods The city of Kashan with an area of 20,000 square kilometers (2100 hectares) and a population of 500,000, facing the mountains on one side with its back to the desert on the other side, is located in the central region of Iran. The geographical coordinates of Kashan with an altitude of 945 meters above the sea level are 51 degrees and 27 minutes East longitude and 33 degrees and 59 minutes North latitude. In this research, at first, data were collected and the criteria were defined and weighted by FANP. Then, using the Arc Gis software, the criterion map was created and standardized. To create the final map, the layers were combined and overlaid by the weighted linear combination method and Gamma function in fuzzy logic. Finally, the attraction map of Kashan City for urban development was created and analyzed. The GIS-based linear weighting method (WLC) includes the following steps: 1. Defining a set of evaluation criteria and options 2. Standardize the mapping layer of each level 3. Define the weight for each criterion: meaning that a relative weight is assigned directly to each criterion map. 4. Generating the layers of standardized layer with weight: This means that we multiply the standardized layers of the weight in the respective weights. 5. Add the final score to each option using the "Gamma" for the layout of the standard weighted map. 6. Sorting options based on ratings (the best option is the option with the highest score). Result and discussion To determine the weight and prioritization of the FUZZY ANP software criteria, the purpose of the research which is suitable for urban development, is at the highest level of decision-making, and at the next level, the criteria Includes (environmental, socioeconomic and physical), and at the last level are the following criteria which are mentioned in the article 13 at the beginning of the article, and according to experts, regarding the recognition of the region the weight loss study is carried out for each of the following criteria. After weighting and performing calculations in the software, the final weight is obtained. In urban development, the highest weights are taken to the slope index and the lowest weight is considered as the index of slope (Table 2). After fuzzying and multiplying the weights by the fuzzy layers, the GAMA operator with three suffixes (0.9, 0.5, 0.1), is applied to the fuzzy layers which is shown in Fig. 7. The 0.9 gamma fuzzy operator shows the most compatible among the urban areas of Kashan with appropriate lands for urban development. Therefore, a 0.9 gamma is referred to as the final layer of appropriate land for urban use. The second coexistence method is, using the WLC linear gravity combination. In this section, all cabinet layers were classified instead of fuzzy layers, and their class values were determined. Then, in the RASTER CALCULATOR, the classified layers were multiplied by the weight of the FANP, and finally, the total layers were plotted, as shown in Fig. 8. Conclusion Based on the results of this research and the previous studies, the optimal result is the time taken by the 0.5 gamma operator, in which case its function is a combination of two operators Sam and Product. According to the final map obtained from the WLC method, urban development is more possible in the southwestern part of the city of Kashan. In the fuzzy method, the results indicate that the current location of Kashan city and its southern regions have good potential. The results of the linear weight combination method are similar to the fuzzy combination method of the current location of Kashan and its southern and southwestern regions. About 15% of the total area of the city of Kashan is suitable for urban development. Therefore, according to the obtained results, the aforementioned model including two methods and the use of the decision-making techniques, can be used as an appropriate model for studying the power of other similar regions (central regions of Iran). The development of the cities of Kashan and Qasr is more oriented towards the south and southwest.
Nasser Rezaei; Farzad Mirzaee; Rahmatollah Monshizadeh
Abstract
Extended Abstract Introduction The development of tourism throughout the world, and its ever-increasing economic importance has paved the way for the development of rural tourism and its impact on the rural development. Initially, this concept took shape by the development of urbanization, the rapid ...
Read More
Extended Abstract Introduction The development of tourism throughout the world, and its ever-increasing economic importance has paved the way for the development of rural tourism and its impact on the rural development. Initially, this concept took shape by the development of urbanization, the rapid growth of transportation system, rising families’ incomes, and more attention paid to the way of spending leisure time in the country in the big cities and villages around them. First, Iran enjoys a great variety of cultural, historical and natural attractions, and is ranked high among the countries of the world in terms of capabilities. Furthermore villagers account for 30% of the total population of the country, and the revenues from the agricultural sector are not sufficient for creating the job opportunities and the income needed for the villagers. Therefore, working on is essential to provide the ground for social and economic development in rural areas. In order to explain the role of tourism in rural development, a comprehensive study has been carried out on the Moridan area and the factors contributing to this development have been evaluated. Finally, considering the capabilities, facilities and limitations in the region, an appropriate method was proposed. Methodology The research method is descriptive-analytic and the information was collected through library studies. The information and statistics related to the government departments were obtained from them and the field studies were carried out through questionnaires and interviews. People needed for selecting the target population of the research were chosen for interview, using the Cochran’s formula (with 95% of sample volume n=38) and from among 318 habitants of 11 villages and 20 families in order to increase its capability of generalizability using the descriptive and inferential statistics obtained from the research. Therefore, the collected data were entered into the periodic table and the standard deviation was determined using descriptive statistics, for all cases. Discussion The village of Moridan is located near the county of Langroud. The study on the social, economic and natural structure of the region shows that agriculture, gardening and stock raising are among the most fundamental economic activities in the region, which is not able to meet the needs of local people on its own. Concerning the geography of the region and taking different aspects into account, tourism is considered to be the safest and most effective economic activity for the villages of the region. The following process was pursued in performing this research regarding the economic impacts of tourism in the region and to realize its objectives: 318 people were asked to fill out the questionnaires. 148 of those people had an average age of 45-65, which is considered the largest group, accounting for 46.7% of the total number of interviewees. Interviewees over the age of 65 account for the least number among the different groups. 33% of the interviewees were government’s employees, and 58% were self-employed. The education level of most of the interviewees was under high school diploma and about 35% of them had university degrees. Two significant economic variables were considered in performing the research, namely, the creation of job opportunities and the amount of income. In the studies done on the created job opportunities, directly or indirectly, as the result of tourism industry growth, the number of the region’s tourists and the number of the jobs created were directly proportional to each other and, regarding the impact of tourism development on the number of the jobs in the region, the opinions of the majority of the interviewees were positive (x=4.8) (very high). This issue was quite obvious, especially due to the number of villas and towns in the region (x=4.7) and, has also had a significant impact relating the role of development. 4.49% of respondents had positive opinions on the creation of new jobs and its impact on preventing the migration of young people to large cities, which is a remarkable percentage. Results Regarding the increase in the average family income, the interviewees confirmed its positive impact (x=4.42). Considering the increase in the average family income due to investing in construction, as well as the provision and distribution of construction materials in the region, and finally, tourism development, families have emphasized on the positive and key role of tourism in mass construction and consequently, the job opportunities. These opportunities include engineers, construction workers, masons, construction material workers, architects, etc. Considering the increase in family income, the provision of some rural items and handicrafts for tourists, tourists have emphasized the sale of rural products, handicrafts and dairy products to tourists, which represent the increase in the families’ income (x=4.41). Regarding the positive role of tourism, most respondents have also emphasized on the increase of the families’ income (x=4.55). The results also indicate that the growth of the capital owned by families is through the sale of their lands (x 4.55). Overall, the findings of the research show that, tourism has a positive economic impact on the rural regions of interest and are also the basis for the proper growth of agriculture and stock raising in the region, and this is in close relation with the rapid growth of the activities related to tourism in the villages. Tourism has proven to be an appropriate means of growth and can help improve the quality of life, create job opportunities and increase the income of families. Planning for performing tourism activities through enacting rules and regulations can help promote the region’s economy. The realization of the aforementioned objectives is subject to the provision of proposals in the form of short and long-term plans.
Saadi Mohammadi; Mehdi Saidi; soran manoochehri
Abstract
Extended Abstract Introduction Natural and anthropogenic hazards have always endangered human society and settlements. These hazards disrupt normal life of human society and lead to crisis. In this regard, it is necessary for all sectors and institutions in the country to adopt smart strategies for dealing ...
Read More
Extended Abstract Introduction Natural and anthropogenic hazards have always endangered human society and settlements. These hazards disrupt normal life of human society and lead to crisis. In this regard, it is necessary for all sectors and institutions in the country to adopt smart strategies for dealing with these natural crises. Moreover, there should be a continuous emphasis on political and economic challenges. As an effective, efficient and precautionary strategy, passive defense explains related requirements and mechanisms, and thus can lead to a reduction of damages resulting from different crises. Materials and methods The present applied research takes advantage of a descriptive-analytic method. With the aim of reducing vulnerability of rural border hazardous areas in Marivan County, it investigates passive defense indices from a spatial and comprehensive perspective. In this way, vulnerable areas are identified and appropriate strategies are selected in accordance with the situation of passive defense in villages of this county. Required information was collected using documentary resources, especially basic geological maps and land use of the region. Then, indices were weighed using binary comparison method and fuzzy logic, and a final compiled map was prepared for the situation of passive defense. In this regard, 14 security, social and natural indices were selected as passive defense indices in accordance with the regional conditions. Afterwards, indices were weighed using AHP method and a Fuzzy weight was assigned to each layer. Accordingly, specified indices were mapped and compiled using Arc GIS. Results and Conclusions The present study takes advantage of a comprehensive and spatial approach to investigate human and natural standards of passive defense in villages of Marivan region in Iranian border. Findings indicated that human standards, including population of villages, distance from main roads and village centers are the most effective and important parameters influencing the status of passive defense in the studied villages. Also, final zoning indicated that the region is mostly in an appropriate status regarding passive defense. But regarding the spatial zoning, most villages (89 villages) are classified as average (quite appropriate). Regarding passive defense, more than 65% of the villages in this county are classified in a quite appropriate (average) class, which indicates that short-term and applied programs must be rapidly adopted to improve the fragile condition of these villages and prevent from deterioration of their status in passive defense. Moreover, more than 75 percent of low populated villages (i.e. fewer than 150 people) are classified as average. Since services and facilities are also allocated based on the village population, it should be expected that low declining population of villages rapidly increases vulnerability and reduces the desirability of their passive defense status. On the other hand, among six rural district centers in the study area, five rural district centers are in an average condition and only one is in a good condition. In rural planning system of the country, rural district centers are considered to be the focal point of rural areas, and provide the most developed services. Thus, it is necessary to use these rural districts as communicational centers for crisis management. 84% of rural district centers in the study area are in an average or fragile state, which may increase vulnerability and result in serious concerns regarding the status of passive defense in these villages. Also, random and normal distribution of these villages is considered to be a relative advantage for passive defense situation. But based on this principle, similar actions must be carried out in all villages to improve passive defense status throughout the rural district. According to findings and field observations, following solutions are offered to improve the status of passive defense in villages of this county: - Considering principles of passive defense in planning of rural development in the county. - Moving toward human centered passive defense through people participation and their education. - Moving away from a purely military and structural viewpoint toward passive defense by officials responsible for city development and security. - Paying attention to standards of passive defense with the aim of determining the most appropriate rural centers or rural districts. - Detailed and accurate short term investigation of the status of passive defense in rural districts and elimination of deficiencies and weaknesses, especially regarding human standards, with the aim of improving the status of these centers. - Compliance with the principle of spatial justice in accessing and distributing services and economic and social facilities in villages of the county with an emphasis on low-populated and remote villages.
Alireaza Darbane Astaneh; sajad ferdowsi; Hamid Reza Shahmohammadi
Abstract
Extended Abstract Introduction Marine tourism is one of the most attractive and most popular tourist branches that has flourished much in recent decades and has attracted a significant part of tourism economy. In the meantime, despite having extensive coastal borders in the north and south, Iran has ...
Read More
Extended Abstract Introduction Marine tourism is one of the most attractive and most popular tourist branches that has flourished much in recent decades and has attracted a significant part of tourism economy. In the meantime, despite having extensive coastal borders in the north and south, Iran has not yet been able to provide tourists with desirable services in relation to marine tourism. The constructing of marine tourism sites in coastal areas is one of the measures that can be taken in this regard. In order to locate such sites, it is needed to take the following criteria into consideration: distance from the sea, view of the sea, exposing to the sun, land use, distance from natural hazards such as faults, floods, erosion, distance from the residential areas, distance from the rivers and lakes, distance from road networks, distance from protected areas and percentage of slope. In this regard, the present paper aims to determine the most appropriate places for the construction of marine tourism sites in the city of Tonekabon, considering the importance of quantitative and qualitative identification and assessment of the characteristics of the areas. It is hoped that managers and planners can provide the ground for developing marine tourism on the southern margin of the Caspian Sea in accordance with the available capacities, by assessing and analyzing this process in the coastal areas of this Sea. The present research seeks to answer the following question: Where are the most suitable places to build a marine tourism site in the city of Tonekabon? Materials & Methods The present research with descriptive-analytical method aims to identify the most desirable locations for the construction of marine tourism sites. The required information was collected by a library method. In order to weight the criteria under study, the opinions of 32 experts were surveyed and the AHP method was used. After determining the weight of each criterion, the information layers of each of the criteria were prepared in the GIS environment and finally, with overlaying of the information layers, the most suitable locations for the marine tourism sites were introduced. Results & Discussion According to the experts, the criteria of exposing to the sun, slope percentage, sea view, land use, severity of erosion in the area, and the criteria of distance from the sea, distance from the road networks, distance from the faults, distance from the protected areas, distance from the rivers, distance from the residential areas and distance from the areas subject to flood, were scored based on the distance (Table-1). Then, the information layers were created based on each of the criteria in the GIS environment and rated according to the weight of each criterion. Accordingly, four areas in the city of Tonekabon have been identified as more desirable compared to other points in order to locate the marine tourism sites. Conclusion The correct location of the various land uses by using tools, techniques, and scientific models and in accordance with the principles and rules of planning can be efficient in solving land use problems. Therefore, proper planning for the creation of marine tourism sites in the proposed places, in order of priority, will provide sustainable tourism development and mutually the economic development of the region. Accordingly, based on the analyses and the results of the research, the following suggestions are presented for the construction of a marine tourism site in general: - Accurate and complete identification of facilities and services available in neighboring settlements with the proposed location. - A detailed study of the proposed location for the construction of a marine tourism site - Investigation and feasibility of the deployment of activities related to the marine tourism in the proposed location. - Studying and identifying the facilities needed by tourists visiting the sea within the desired range. - Advertising and introducing the capabilities of marine tourism at national and regional levels. - Encouraging investors and local people to invest in the construction of tourism sites. - Allocating sufficient funds and credits to build the primary infrastructure. - Strengthening and improving roads and communication paths to the proposed location - Familiarizing people and authorities with the benefits of marine tourism and trying to attract their participation - Improving and enhancing the safety and security conditions within areas of interest.
Mohsen Shaterian; Seyed Hojjat Mousavi; Zahra Momenbeik
Abstract
Extended Abstract Introduction Knowing type and percentage of each land use and land cover are considered to be a fundamental need for understanding and managing an area. Given the ever-increasing changes in land use, managers and experts need to be aware of past changes and developments. This is because, ...
Read More
Extended Abstract Introduction Knowing type and percentage of each land use and land cover are considered to be a fundamental need for understanding and managing an area. Given the ever-increasing changes in land use, managers and experts need to be aware of past changes and developments. This is because, policy making and solving existing problems require detecting changes and determining the trend of changes over time. Satellite data is one of the quickest and least expensive methods available based on which researchers can produce different land use map. In this regard, Landsat Satellite imageries are one of the most important data sources used to study different types of land use and land cover changes, such as deforestation, agricultural expansion and urban growth. Extracting information from satellite imagery through classification is one of the most widely used methods. One of the most important applications of remote sensing data is for investigating and discovering changes in phenomena with a spatial-temporal nature (i.e. phenomena whose position and status changes over time). In fact, change detection is the process of identifying and determining the type and extent of land cover or land use in a given period of time based on remote sensing images. The present study seeks to monitor land use changes in Shahr-e Kord during the period of 1985 to 2017, and to prepare land use maps of the area using Landsat satellite imageries. Materials & Methods In the present study, satellite imageries received from TM, ETM+, and OLI sensors of Landsat satellites in 1985, 2000, 2015, and 2017 were extracted from the United States Geological Survey (www.usgs.gov) and analyzed using different remote sensing software and geographical information systems like ENVI 4.7 and ArcGIS 10.4. In order to produce land use changes map, error correction was first performed. Then, images were processed using supervised classification method and maximum likelihood algorithm, which based on previous studies have a higher accuracy compared to other algorithms. In order to classify land use/land covers, a training sample was produced for each land use based on field observations, topographic maps (1:25000) produced by Iran National Cartographic Center, Google Earth imageries, and visual study of the imageries. Then, classification results were corrected using auxiliary data, visual interpretation, experiential knowledge, and GIS techniques. Prior familiarity with the region, visual study of imageries, previous experience and field operations revealed that following land uses exist in the region and are detachable on the images as well: a) urban, b) agricultural, c) industrial, d) meadow, e) airport, and c) other land uses (including pasture, rocky areas and areas without any specific land cover). Confusion or error matrix –including overall accuracy, producer’s accuracy, user accuracy and kappa coefficient- was also used to evaluate the accuracy of the classification. Also, urban land use changes were monitored using image differentiation functions. Results & Discussion After production of land use maps based on imageries received in 1985, 2000, 2015, and 2017, area of the six land cover classes was obtained. Results indicate that during these four periods (1985 to 2000), urban, industrial, agricultural and airport land uses have increased to 13, 111.7, 5.2 and 3.4 km2 (1.26, 10.16, 0.51 and 0.4 % increase) respectively, while meadows and other land uses have faced a decreasing trend. In other words, it can be concluded that most changes during this 15-year period occurred in meadows and other land uses. Since development of the airport have resulted in destruction of a large part of meadows, this land use have faced more severe changes. Land use changes from 1985 to 2017 indicate that 7.8 km2 of agricultural lands were transformed into urban land use, 1.4 km2 to industrial land use, 1.08 km2 to airport and 7.7 km2 to other land uses. Also, 20.5 km2 of other land uses were transformed into urban land use, 203.1 km2 to agricultural land use, 0.03 km2 to dried meadows, 0.17 km2 to airport and 14.5 km2 to industrial land use. 2.8 km2 of meadows were also transformed into agricultural land use, 0.05 km2 to industrial land use and 2.04 km2 to airport. During this period, urban and industrial land uses have remained unchanged. Conclusion Generally, results indicate that urban, industrial and agricultural land uses have developed over time, and these land uses have always had a positive increasing trend. While meadows and other land uses have had a decreasing and negative trend. This is due to the construction of Shahr-e Kord Airport, uncontrolled exploitations, digging wells and drought phenomena, which have led to a decrease in the level of water in aquifers and destruction of natural ecosystem in this region. In this way, previous meadows have turned into the source of intense dust generation in the city, which is a sign of desertification and ecosystem destruction. Due to drought and water scarcity in recent years, new deep wells have been dug with the aim of supplying water. This have occurred despite the critical condition of the meadows, and thus, have resulted in repeated protests by farmers and livestock farmers. Dramatic decrease in other land uses, including pastures, can also be attributed to recent droughts in Iran and intense dust generation. Increased population, increased human pressure on natural resources and also development of agricultural lands are among other causes of the present situation. Based on existing maps and satellite imageries, Shahr-e Kord is developing towards North and North West. In some areas, this development has occurred in pastures. Therefore, due to very high population density in the region which is still increasing, and also ongoing migration of villagers to the city, supplying appropriate accommodation and occupation for this population requires finding new suitable locations for urban and industrial development of the city. This development process should happen with correct management and according to the goals of sustainable development.
Kamal Omidvar; Nesa Sepandar; Shahab Shafiee
Abstract
Extended abstract
Among the natural disasters, floods involve the highesthuman casualties. The economic damages of flood in developing countries, including Iran, is much more, and its occurrence is very high particularly in the cold months of the year in the west of the country. By studying the synoptic ...
Read More
Extended abstract
Among the natural disasters, floods involve the highesthuman casualties. The economic damages of flood in developing countries, including Iran, is much more, and its occurrence is very high particularly in the cold months of the year in the west of the country. By studying the synoptic maps of the Earth’s surface and the middle and upper levels of the atmosphere, many Earth-surface phenomena such as flood, based on the spatial arrangement of the pressurecurves or the height and the location of patterns on these maps, the pattern of daily weather conditions can be controlled and the origin of many of these phenomena can eventually be determined. Precipitation is the major climate phenomenon resulting from the complex interactions of the climate system and it has a complex behavior due to the bond with various components of the climate system. The occurrence of precipitation requires the provision of several conditions. The availability of moisture, deep instability and cooling, are the prerequisites for the occurrence of precipitation. All of these conditions must appear in its strongest state for the occurrence of super heavy rainfalls.The western region of Iran is a suitable area for exacerbating and extending rainfall and sometimes flooding due to the presence of mountains. This is because the role of mountains in in capturing air humidity plays a significant role in increasing the atmospheric precipitations.There are two types of approaches in synoptic studies: circulatory to environmental, and environmental to circulatory. In the study of precipitation, the environmental to circulatory classification and approach are used. The reason for thisis that, the temporal and spatial variations of rainfall are severe,and the environmental to circulatory method allows the researchers to concentrate on the precipitation and, consequently, on the synoptic patterns whichtheyintendtostudy.In this study, the heavy and pervasive rainfall in the province of Kermanshah on October 27-30, 2015, was selected and it was attempted to analyze the synoptic and thermodynamic conditions of the occurrence of this torrential rain. In this research, the environmental to circulatory approachwas used. To conduct such studies, two databases are required. In this paper, which was conducted with the aim of analyzing the heavy rainfall synoptic situation in Kermanshah province (on October 27-30, 2015), two databases have been used. First, the daily rainfall data from October 25 to 31, 2015 were extractedby referring directly to digital files sent by the stations to the Iranian Meteorological Organization, and then, the high atmospheric variables on the same date were used for synoptic and thermodynamic analysis of the aforementioned precipitation and to see how the synoptic systems entered the region. Data related to the station’s level pressure, geopotential height, orbital and meridional components of wind and moisture at different levels of the atmosphere from the database related to high atmosphere data were obtained from the United States National Oceanic and Atmospheric Administration’s (NOAA) National Center for Environmental Prediction, and National Center for Atmospheric Research (NCEP / NCAR) with a spatial resolution of 2.5 by 2.5 arc degrees. Then, for the synoptic analysis of the aforementioned rainfall, daily maps of the Earth’s surface and the levels of 850 and 500 hPa were plotted in the GrADS software. Drawings of these maps were carried out 48 hours prior to the start of the rainfall until the day of full stop. The instability indices KI, LI, SW and SI were also usedfor the thermodynamic analysis of the high atmosphere data of Kermanshah and obtaining the extent of instability in the study days. In the analysis of the Earth’s surface synoptic mapson the day of torrential rains, the southern system appearsas a low-pressure field and has the highest power in the Red Sea and Sudan region, and the low-pressurecurrent has been drawn to the center of Iran, and extends over a vast areafrom the east and south of the European high pressure to the west and center of Iran and the conditions of instability are dominant in these areas. The ascending currents have increased because of the intensity of pressure reduction. It seems that the intense pressure gradient between the Sudan’s low-pressure and the European high-pressure current is one of the causes of the occurrence of torrential rains during the studied period in the province of Kermanshah. All stations in Kermanshah province have reported rainfalls under this very strong pressure and moisture from the Persian Gulf and Oman Sea. Enhancement of the low level system of the Earth’s surface and the downfall of cold weatherin high latitudes by polar troughat the level of 500 hpa contributes to the occurrence of atmospheric instability and the onset of rainfall in the west of the country. The trough is located on the eastern Mediterranean in such a way that, its axis at the end of the Mediterranean trough passes over the Red Sea. on the eastern part of this trough’s axis (Red Sea descent), there is air turbulence from the west of the Red Sea to the north of the Caspian sea, which causes low pressure of the Earth’s surface to be raised to high latitudes. If this trough is strengthened while moving eastward, it will contain thunderstorm, rain and snow, in case of having enough moisture on its way, which is from southwest to the northeast, while passing over the heights. At the beginning of the heavy rainfall, the subtropical jet stream is onNorth Africa and the polar jet stream is on the areas located on the north of the Caspian and Black Sea. The amount of precipitation increase dramatically as these two jet streams get closer to each other, the polar jet stream changes position to the lower latitudes, and the subtropical jet stream moves towards the northeast. In the study of instability indices, there has been dispersed thunderstorm according to the LI instability index.The probability of dispersed shower on October 28 is very low according to the S1 index and the study area will witness very storms with low intensity on this day according to SW index. According to the KI index, this probability reaches to 60-80% in Kermanshah province on October 28 (peak day of precipitation).
Morteza Karimi; Somayeh Sadat Shahzeidi; Ebrahim Jafare
Abstract
Introduction
Iran is a rugged landscape with varied morphologies. Kermanshah Province is a mountainous region which lies between the Iranian plateau and Mesopotamia at Zagros Mountain Range. This area has geopolitical military value and importance. Past experiences have shown that large military units ...
Read More
Introduction
Iran is a rugged landscape with varied morphologies. Kermanshah Province is a mountainous region which lies between the Iranian plateau and Mesopotamia at Zagros Mountain Range. This area has geopolitical military value and importance. Past experiences have shown that large military units are not suitable for operations in this area. This is a problematic area for opposing forces, because natural geographical conditions make coordination difficult. During the Imposed War, the area has been continuously attacked by the enemy, due to its prevailing geographic conditions. After the war, the presence of US forces and more recently ISIS terrorists in Iraq have increased the sensitivity of the region. Now, despite the presence of a Shi'a government in Iraq, the region is continuously provoked and made insecure by transborder forces. Considering the policy of our enemies (America, terrorists, etc.) in the region, the vicinity of Iranian city of Qasar-e Shirin to the city of Khanqin in Iraq has made it possible to use the region as a source for offensive operations against Iran or conducting any operation in the region. Regarding military threats from the west, this axis is the best place to advance and dominate the western regions. It is also used by armed insurgents seeking to threaten and perform ruinous operations in the region. In this regard, it is necessary to examine and analyze topographical phenomena and defensive capabilities of this axis from a natural and human geographic perspective. Qasr-e-Shirin axis in Kermanshah has several capabilities for territorial defense of the province. One of the most important capabilities is the use of geographic topographic factors affecting widespread military regular and irregular operations. These factors result in channeling and delaying of operations and show the effects of topography on the implementation of military movements, disrupting the order of operations and loss of commanders’ concentration. Few researches have considered this important issue and geographical capabilities of this axis, as a means for defending the western region, have not been investigated scientifically and systematically.
Materials & Methods
The research method is descriptive-analytic. Thus, the following process was predicted to achieve the objectives of the plan.
-Secondary research
-Investigating natural factors in the studied area considering 1: 50000 and 1: 250000topographic maps, data and indexes are recorded on digital model of the region.
- Digital capturing and 3D reconstruction of the region by Surfer Software.
- Field observations, photographing and filming geographical phenomena in the region, adapting to documentary data and using the comments of military experts and senior commanders in the region and province.
-Analyzing the morphology and studying topographic phenomena and defense capabilities of this axis from a geographic perspective.
Results & Discussion
The axis extends from Khosravi to the entrance of Kermanshah city with a length of 188 km.This road was previously called Iran's security corridor. Now, it is called Karbala Highway and has a significant and strategic role in the relationship between the two countries, Iran and Iraq, and other countries with similar religious interests. The new and old route connecting Tehran to Karbala or Baghdad cross this region. The geographic location of the region and the direction of these elevations are parallel to the border. The ground slope gradually decreases from east to west, and the elevations continue up to the Mesopotamia.
In the eight years of Iranian Sacred Defense, Qasr-e-Shirin, Diyala, Khanqinin, Dehliz-e patag were considered to be operational axes. Therefore, due to being mountainous; ethnic, racial, religious convergence and divergence of indigenous inhabitants with the Islamic Republic of Iran and Iraq, this axis was studied and analyzed with the aim of protecting territorial zones of the Islamic Republic of Iran and creating a defensive plan for the region.
Perhaps, it can be claimed that the most appropriate axis for advancing toward the central parts of Iran is the western region of the country (Qasr-e Shirin axis, Eslamabad-e Gharb, Kermanshah). Therefore, it is necessary to study the defensive features and identify its strengths and weaknesses. Also, recognizing natural landscapes, identifying passages, routes, and important defensible bridges makes it possible to use natural and topographical features and prevent the enemy from advancing toward the center of the country.
Conclusion
Kermanshah Province and the city of Qasr-e-Shirin are bordered by Iraq. They are also located near the centers of Takfiri, ISIS, and terrorist crisis, which can cause insecurity on local, regional and national levels. In order to ensure security, some aspects need to be investigated, which to some extent rely on natural and human factors and the presentation of a territorial defense plan in the region. Regarding the geographic location of the region, natural factors are a positive point. By taking control of sensitive areas, it is possible to control and stop military movements. Examining geographic factors, we can mention the following issues:
(A) Elevations in the Kermanshah province: going from east to west, the ground elevation decreases, and Kermanshah highlands overshadow the Mesopotamian plain, which provides the possibility of performing any offensive and defensive operation for Iran.
(B) Studying communication pathways in border regions of Kermanshah province, it can be concluded that communication pathways have an important role in achieving military, political, economic goals. Routes connecting Qasr-e-Shirin to Sar-e Pol Zahab, Eslamabad-e Gharb and Kermanshah have strategic military, political, and economic value. During Iran-Iraq war, these road was used for military and political purposes, but today they are used for economic purposes.
C) By examining the geometric features of the border between Kermanshah province and Iraq, it can be concluded that the convex form of Qasar-e Shirin border is of military importance for Iran and thus, Iraq first occupied this area during Iran-Iraq war. Finally, this axis passes through mountainous narrow areas, and thus it is the best place to delay, stop, and channel enemy's ground movements.
Mehrdad Hadipour; Hamid Darabi; Aliakbar Davudirad
Abstract
Extended Abstract Introduction With the development of urbanization, a large part of agricultural areas and forests have been replaced by residential areas, industrial centers, and other infrastructures. This is due to human life style and his endeavor to reach sustainable urbanization. A series of changes ...
Read More
Extended Abstract Introduction With the development of urbanization, a large part of agricultural areas and forests have been replaced by residential areas, industrial centers, and other infrastructures. This is due to human life style and his endeavor to reach sustainable urbanization. A series of changes in the reflection of light from different material’s surface, heat storage and heat transfer, have changednatural and artificial landscape orsignificantly affected local climate. Therefore, public concerns about urban sprawl, increasing urban population and quality of urban environmental have motivated planners to seek better perspectives for development of urban areas. Increasing temperature of urban areas is considered to be one of the most important environmental problem in cities. This increasing temperature results in creation of Urban Heat Islands (UHI) in some parts of urban areas, which are significantly warmer than surrounding urban environment. Therefore,a new and successful method of urban planning should be introduced with respect to spatial distribution of land surface temperature (LST) to achieve better urbanization and reduce environmental impacts on cities. Materials & Methods The present study takes advantage of Landsat Thematic Mapper (TM)/Enhanced Thematic Mapper Plus (ETM+) thematic maps to investigate therelationship between air pollution, and two indexes of NDBI and NDVI with land surface temperature (LST) and Urban Heat Islands (UHI) in urban areas. Satellite imageries of Arak (an industrial city in Iran) has been chosen for the case study. Urban and natural areas and impermeable surfaces such as roads, buildings and other constructions are rapidly developing in this city. In the first step of research methodology, necessary pre-processing programs such as radiometric corrections were performed on the satellite imageries. Then satellite imageries were transformed toatmospheric images to produce NDBI and NDVI indexes. Finally,land surface temperature maps wereproduced using the method of Landsat Project Science Institute in Arc GIS 10.3. To classify satellite images, seven land use classes were identified as poor pastures, averagepastures, rich pastures, bare lands, Lake’s Shore, agricultural lands and residential lands.Then, training images classification method was used to collect samples from the study area and classification was performed using maximum likelihood method for monitoring. In order to analyze LST parameter using NDBI and NDVI indexes, air quality data,and statistical methods like Kolmogorov-Smirnov test, paired t test and Pearson correlation test were used. The results of Kolmogorov-Smirnov test indicated that data used in this study was normally distributed. The results of t test, temperature recorded by synoptic stations in Arak and remotely sensed data indicated that the accuracy of the test is more than 5%. Thus, the difference between residential land use and other urban land uses was not statistically significant. Moreover, results indicate that there is a more than 99 percent correlation between temperature recorded by the synoptic stations in Arak and data collected from satellite imageries. Results of correlation with remotely sensed data indicatedthatthere is a significant correlation between99 percent of results and less than 5 micron particles. Results & Discussion Correlation between air pollution data andremotely sensed data (LST) indicated that LST and less than 5.2 micronparticlesare significantly correlated with 99% accuracy. Urban heat island usually occurs in metropolitan area and its surroundings. Due to climate changes, urban heat islands are constantly developing. This results in increased energy consumption for air conditioning systems. Thus, reducing the effects of urban heat islands has become an important global issue. The present study has successfully explained the effects of urban heat islands and their environmental problems on normal life. Detailed program of related measures and policies should reduce the intensityof urban heat island. Final development of the cities should be based on land surface temperatures in surrounding areas in a way that cities can reach a lower surface temperature as compared to the temperature before urban development. Conclusion Following strategies are suggested for a more comprehensive consideration of urban green spaces in urban planning and future development of cities: Paying attention to architecturalcriteria and urban land use, and alsopaying attention to soil and water management parametersbased on the principles of green architecture, paying attention to standards of anthropogenic temperature rise caused by human activities, and the problem of urban heat islands. Moreover, it is crucially important to prepare the necessary situation for the community to reach a good physical and mental health.
Extraction, processing, production and display of geographic data
Hossein Asakereh; Somayeh Taheri Alam; Nosrat Farhadi
Abstract
Extended Abstract
Introduction
Climate changes manifested in different ways and time scales (short-term fluctuations and long-term changes) effects. The consequences of such changes can be traced to various parts of the environment. One of the climate change manifestations is the change in biological ...
Read More
Extended Abstract
Introduction
Climate changes manifested in different ways and time scales (short-term fluctuations and long-term changes) effects. The consequences of such changes can be traced to various parts of the environment. One of the climate change manifestations is the change in biological phenomena, primarily vegetation, which reflects an intricate pattern of changes in climatic elements, particularly temperature, and precipitation. Although the substantial role of climatic elements on the density and geographical distribution of vegetation has been confirmed, it is arduous to estimate the relationship between climate changes and vegetation due to the complexity of the mechanism of different characteristics of climatic elements (such as the amount, type, intensity, season, continuity, etc.), feedback processes, and also the response time of the vegetation to climatic changes.
Materials and Methods
In the current research, the gridded data of the Normalized Difference Vegetation Index (NDVI), a product of the MODIS terra, was used from 2001 through 2016. The data were extracted from a GIOVANNI website. In the present study, Iran's vegetation density classes were determined based on quantitative methods, and the geographical distribution of two-half parts of the understudy periods was compared.
Results and Discussion
The long-term average and changes in Iran's NDVI were examined using NDVI grid data. The finding revealed that the NDVI has a direct relationship with the precipitation. Accordingly, the northern, northwestern, and western regions, as wet regions in Iran and comprise proper soil, included high NDVI.
Dividing NDVI data into two 8-year periods revealed that in the first 8 - year, despite the high amount of precipitation, the NDVI was lower approximated to the second 8 - years. This difference can be attributed to the lag - time in reactions of NDVI to climate changes. It takes several decades for most tree species to react to climate change. In addition, the increase in cultivated area and, consequently, the excessive use of underground water has a noticeable role in increasing trends of the NDVI values.
Conclusion
The long-term average and changes in Iran's NDVI were examined using NDVI grid data. Our finding showed that the spatial distribution of NDVI has a direct relationship with the precipitation. Comparing two - half of understudy data showed despite the high amount of precipitation, the NDVI in the first half was lower approximated to the second 8 - years. This difference can be attributed to the lag - time in reactions of NDVI to climate changes. It takes several decades for most tree species to react to climate change. In addition, the increase in cultivated area and, consequently, the excessive use of underground water has a noticeable role in increasing trends of the NDVI values.
Mohammad Rauf Heydarifar
Volume 21, SEPEHR , February 2013, , Pages 77-89
Abstract
Globalization is happening and an ambiguous future is approaching. There are controversial perspectives regarding the influence of this process on geographic space. Some try to prove the importance of geography and its influence and sustainability in social life, while others do not predict a bright ...
Read More
Globalization is happening and an ambiguous future is approaching. There are controversial perspectives regarding the influence of this process on geographic space. Some try to prove the importance of geography and its influence and sustainability in social life, while others do not predict a bright future for geography and the concept of territory. Movements unbound to a space, non-territorial entities, organizations and companies bespeak of a new kind of social relation. An emerging phenomena is evolving which will eliminate concepts like space, boundary, territory, district, area, diversity and difference and implies the death or end of geography. Therefore, fundamental investigation in the nature and reality of geography is one of the main critical responsibility of geographers, to which this article seeks to contribute. Neorealism and future studies approach are applied.
Hossein Mohammadi; Ommolbanin E'temad
Volume 20, Issue 78 , August 2011, , Pages 79-89
Abstract
Today, air pollution is considered a very important international issue. Tehran is one of the most polluted cities in the world. Geographic location, topography, climate, and industrial concentration cause pollutants to accumulate in the city. One of the diseases that is increasing due to air pollution ...
Read More
Today, air pollution is considered a very important international issue. Tehran is one of the most polluted cities in the world. Geographic location, topography, climate, and industrial concentration cause pollutants to accumulate in the city. One of the diseases that is increasing due to air pollution is lung cancer. In this study, the relationship between atmospheric elements such as temperature, pressure, relative humidity and sight less than 2 km, and atmospheric pollutants such as carbon monoxide (CO), nitrogen monoxide (NO), nitrogen dioxide (NO2), Nitrogen oxide (NOx), sulfur dioxide (SO2), Ozone, (O3) airborne particles (PM-10) and dust during a 10-year statistical period, (1999-1999), was investigated using descriptive statistical methods and correlations and regression relationships, and the analysis of the effects of monthly and annual means of variables on the mortality of lung cancer in Tehran were studied. The results show that there is a high correlation between lung cancer and atmospheric elements. There is a meaningful relationship between the smaller mean number of days with weaker sight and the monthly mean number of lung cancer incidence. With increase of dust in a month, mortality has also increased, as dust is found in the city air more than other pollutants. There is a significant relationship between the monthly variables of contaminants with lung cancer, and there is a strong correlation between the annual mean of pollutants and lung cancer. The association between the annual average of dust and lung cancer is 99%.
