طبقه بندي محدوديت هاي مورفولوژيكي توسعه شهري با استفاده از DEM ماهواره اي و GIS (مطالعه موردي: محدوده طرح جامع شهر اهر)

Extraction and classification of morphological limitations of urban development using DEM and GIS (Case study: Ahar city)

Urbanization normally is identified with growth and development of any country, so that in some cases the planning development of cities over unstable morphological features of lands might cause many natural limitations. However, determination and classification of morphological features of land and related land uses can reduce geomorphic limitations and hazards. Ahar has located 120 km NE of East Azerbaijan Province center, in a region with many morphological limitations and in a mountainous terrain. In this study, susceptible areas for future development of Ahar were classified on the basis of morphological data of ground surface. One of the widespread tools for decision-making support in the spatial analysis and urban and regional development planning is geographic information system (GIS). With the development of GIS, environmental and natural resource management may use the information systems in which data are more readily accessible, more easily combined and more flexibly modified to meet the needs of environmental and natural resource decision making. GIS was extensively used to identify suitable development zones in Ahar. Visual results showed that most residential areas in future development of the city (about 75% of the area) will face different degrees of morphological limitations.