Analysis the function and role of natural factors in locating and city physical development (Case study: Kamyaran City)

Physical development of Kamyaran city and how it deals with various natural and geomorphic units, including hills, rivers, old alluviums and fault lines have brought important issues. This study seeks to identify factors influencing the location and development of Kamyaran and regarding these factors provide an appropriate model for the future development of the city. The method is descriptive – analytical. This study has used field observation, aerial photos, satellite imagery (Landsat) and DEM 27 meters, to extract much of the information and maps in the GIS software. Data sets were examined and analyzed in Analytical Hierarchy Model. According to the results, almost 33% of the Kamyaran current limits were built in areas with optimal fit. Lands with the proportion of medium and low fitness, respectively, are next in priority. Constructed parts of the city on the foothills and their surrounding areas, around river and creeks, all together show the ignorance of natural factors. The reason for this situation further is due to the willing of land owners and the interests of early migrants to settle beside the routes that head to their migration origin. Finally, it should be noted that based on the analysis of hierarchical model, within 34 square kilometers buffer around the city, nearly 29 percent of its area, has high and very high proportion for development, which are located in the Northeast, Northwest, West and Southwest of the current position of Kamyaran city.