Geographic Data
Seyed Asadallah Hejazi; Fariba Karami; Saye Habibzadeh
Abstract
Extended AbstractIntroductionIn recent decades, cities have provided the prelude to widespread urban growth and development as the most important human settlements, due to the increasing degree of urbanization and the increase in urban population, which is one of the most important aspects of global ...
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Extended AbstractIntroductionIn recent decades, cities have provided the prelude to widespread urban growth and development as the most important human settlements, due to the increasing degree of urbanization and the increase in urban population, which is one of the most important aspects of global transformation. In recent decades, following the growing expansion of urbanization and urbanization, as well as the continuous increase in population, many cities in the country have faced significant physical development, which has left planners and city managers with the problem of determining the right axes. And the boundaries of future physical growth of cities have faced. Maku is one of the cities that experienced an annual growth of 3.7 percent between 1996 and 2016, with a population of 46,581. Given the forecast of the increase in the population of the city in the coming years, the identification of suitable land for its physical development is an inevitable necessity. Several factors, including geomorphological features, climatic conditions, geological features, are effective in choosing the location of cities. The study evaluated the role of geomorphology as one of the factors influencing the location and physical development of the city of Maku.Materials and MethodsThe research method is of a descriptive-analytical type with a functional purpose. In this study, raw data was collected through documented and field studies. This study examines the geomorphological factors influencing the physical-physical development of the city of Maku. To evaluate the optimal development of urban land, the components of lithology, soil, slope, distance from the river, direction of slope, height, land use, distance from fault and Road in the area of the surrounding city of Maku were used. To analyze data and select the optimal location, a combination of two phase - electro and Shannon entropy models has been used. To prepare the ground fit layer, the layers in question are standardized and phased in the ArcGis environment using the Phase model and by the calculator instrument and in the form of a raster in the form of a value of zero to one. Finally, the coating of layers using phase logic (gamma) to optimize the development of the city of Maku was determined, and then the development path of the city of Maku was classified into five groups: completely appropriate, relatively appropriate, appropriate, inappropriate and very inappropriate.DiscussionAfter determining the effective criteria in locating and detecting the weight of the criteria, the information layers should be combined with the appropriate method. The composition of the map is obtained by overlapping weighted maps. Merging and combining different spatial layers from different sources together is the main goal of GIS projects and its unique feature, so that the interactions are described and analyzed with the help of predictive models to support decision-makers. The final map of the development potential of the city of Maku was prepared by combining different layers of information and classified according to the Likert scale. In this classification, land was considered suitable for urban development in 5 groups of lands with very low, low, medium, high and very high development potential. According to the above map, most of the city's immediate land is located in the eastern and western parts of the city for Urban Development. The southern and northern lands of the kalbdi District of Maku are also small or very small for the future development of the city. The proximity to the epicenter of earthquakes, the short distance from the river and the location of the flood path are the main reasons for the inadequacy of the above land for the physical development of the city of Maku. The lands located east and West at the entrance of the city from the shout and merchant side are the only immediate areas of the city that are very suitable for the future development of the city.ConclusionAmong the seven geomorphological factors studied, the two factors "altitude" and "lithology" are the highest coefficients of importance, and the factors "slope direction" and "distance from the river" are also the least important. The results of comparative analysis of the eight geographical directions in terms of geomorphological factors also show that in terms of the litholysis factor, the east, west and northwest directions are more desirable compared to other options. In terms of the elevation factor, the Northeast and East Directions are more suitable, and in terms of the distance factor, the West and northwest directions are more preferred. Comparing options in terms of soil factor also indicates a greater favorability of the Northeast and northwest directions. Distance from the river was another component that, based on the analyses, the East and Southeast directions, identified more favorable areas for urban development in terms of this component; and finally, in terms of the slope direction criterion, the lands located in the southeast of the City face greater desirability. After determining the coefficient of importance of the criteria and the relative score of the options in terms of each of the factors studied the coefficients of importance of the criteria and the relative weight of the options were calculated within the framework of the method of the process of hierarchical analysis of the integration and score of each of the eight geographical directions as follows the East was calculated with a gradient of 5 West 5 southwest 1 northeast 2 North 0 south 0 Southeast 4 Northwest 0 thus in terms of geomorphological factors the study word in the ین research orientations east west and the southeast is proposed as a priority for the future development of the city of Maku.
Issues of the border regions of the country
Fariba Karami; Hossein Karimzadeh; Mohamad Javad Ahmadi
Abstract
Extended AbstractIntroductionRecently, Disaster Mitigation and Management Organization of Iran has focused on construction of disaster management and support bases. To reach such an aim, it is necessary to investigate different areas and select an appropriate geographical location for this type of land ...
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Extended AbstractIntroductionRecently, Disaster Mitigation and Management Organization of Iran has focused on construction of disaster management and support bases. To reach such an aim, it is necessary to investigate different areas and select an appropriate geographical location for this type of land use. The selected location must be safe in critical conditions and make the base as efficient as possible. Accurate site selection is a necessary step towards prevention, preparedness and dealing with various disasters. Selecting an appropriate location for these bases is extremely important in their relief operations. Thus, the bases must be properly accessible while having a strong structure unthreatened by any risk. Disaster management measures are based on information analysis and take advantage of geographical information tools for spatial analysis. Geographic Information System (GIS) can be used in all stages of disaster management. Geographic information system is a very useful tool for implementation of logical models, decision making about land use allocation, selection of the most suitable site, evaluation of suitable options and finally reaching an integrated choice. Geographical location of Baneh in vicinity of Iran-Iraq border, and related natural hazards (geological, climatic, and etc.) and unnatural threats (political-security) have made passive defense and especially site selection for disaster management and support bases a crucial issue in this border area. Therefore, the present study seeks to select the best possible site for disaster management and support bases in Baneh. Materials and MethodsData have been collected through library research and questionnaires distributed among experts. Research criteria have also been classified into natural and unnatural (man-made) categories which include altitude, slope, slope direction, vegetation, lithology, distance from fault line, distance from river, climatic factor (precipitation), link roads, distance from city, distance from village, gas stations, health centers, relief agencies, military and police stations, open spaces and distance from the international Iran-Iraq border. Analytic Hierarchy Process (AHP) was used to analyze the questionnaires and Expert Choice and Arc GIS software were used for data processing. The importance coefficient of the criteria were analyzed in Arc GIS software using AHP FUZZY model and the final results were presented in the form of a map.ResultsResults indicate that unnatural (man-made) criteria received a higher weight as compared to natural criteria. Among these criteria, vicinity to health centers received the highest weight (0.151), while vegetation and slope direction received the lowest weight (0.016). Baneh generally lacks a proper situation for the construction of disaster management and support bases except for the cities in the middle of the county. ConclusionDue to the occurrence of various natural disasters and unnatural (human) threats in the border areas of the country including the county of Baneh which have affected the security of the region by their serious damages and high death tolls, it is necessary to focus on passive defense in site selection for disaster management and support bases in these areas. Results indicated that quick and easy access from bases to health centers and relief agencies, link roads, police stations and proximity to cities have the highest priority in site selection for disaster management and support bases. Other desirable passive defense criteria include distance from Iran-Iraq border and distance from fault lines. The final map shows unacceptable situation of the county in terms of disaster management bases. Except for cities located in the middle of this county such as Baneh, Buin, Armardeh and Kanisour, other cities lack a proper situation for construction of these bases. Such a situation results in higher vulnerability of these areas in probable disasters. Therefore, it is necessary to adopt short-term and practical programs along with important and effective criteria of passive defense to find the most optimal sites for disaster management and support bases in Baneh County.
