Fuzzy Analysis of Indicators in Assessing the Urban Development Potential (Case Study: Ghaffar Catchment)

The research methodology of "descriptive-analytic" with the aim of analyzing the indicators in the assessment of urban development in the catchment Ghaffar has been carried out in area. Indicators of urban development in the area according to available data resources include 12 factors of topography, vegetation, slope gradient, the land, soil conditions, altitude, power user, the communication area, the hydrology of the region, the economic and social area, region, land use and fault conditions which are classified. To form database and providing required layers of base map we used data on natural resources of Khuzestan. To achieve the status of urban development in Ghaffar catchment conversion layer and software were produced in Arc GIS 10. According to the fuzzy membership functions of the fuzzy map conversion and in order to analyze their situation and assess the model of urban development we offered Ghaffar catchment area a fuzzy gamma operator (Fuzzy Gama). Maps produced in the ArcGIS software and fuzzy process and analysis layers show that among selected indicators about 0.67 of the basin area is not suitable for urban development. Test threshold of 0.7, 0.8 and 0.9 for gamma analysis shows that, Gamma analysis phase with a threshold of 0.7 in accordance with the conditions of the region and consistent with than the limited parts of southeast and east bordering of the catchment areas of basin for urban development is not appropriate.