Studying the Human and Natural Obstacles for Skeletal-Physical Development of the Cities by Using GIS, Case Study: Germitown Ship

Today, uncontrolled and uneven physical development of the cities, has left various consequences and encountered the cities with specific problems and difficulties. Unauthorized construction, inadequate Neighborhood in usages, environmental pollution and the loss of agricultural lands, destruction of natural ecosystems and the expansion toward vulnerable urban zones from the view point of environmental hazards such as flood valleys, unstable slopes, river right, and. .. are an example of the problems that we see today. Germi town ship, due to its geographical location and placing on the steep and mountainous zones has several limitations. Therefore, the survey and analysis of the various natural phenomena and human factors of the area, and ultimately presenting control strategies for logical dealing with these processes and the resulting limitations is necessary. To this aim, the present study has been performed for studying the proper areas for urban development by using GIS system. For spatial analysis and multi-scale evaluation, Edrisi software was used and for standardizing the values and homogenization of scales in drawing layers, standardization method based on membership degree in fuzzy function was used. Critic method was used for weighting the criteria and Topsis technique has been used in final analysis of multi criteria evaluation (for suitable areas for urban development) and proper coordinates of urban planning has been determined.The results showed that the urban development toward the North East is faced with limitations and restrictions due to confronting with fertilized agricultural lands, high level of ground waters and proximity to fault lines, and are not suitable for development. And with respect to other factors, in proportion with the development indices, the eastern and southern part of the city are considered as the most appropriate areas for urban development of Germi.