Spatial organization of the future expansion of Harsin city based on Geomorphological parameters using OWA, LCM and AHP models

The development of settlements has led to the identification of suitable locations for urban development goals as one of the priorities of urban planners. Accordingly, the present study tries to explore the natural environment of the city of Harsin for the development of residential areas with a view to future development. The present research is based on library, field and software methods. In this research, eight criteria included Elevation, Slope, Aspect, Distance from the River, Distance from Fault, Lithology, Road and Land use has been used. The research methodology is a combination of the preparation of information layers in the ARC GIS environment, Standardization by Fuzzy Logic and Weighing in the form of AHP model and zoning using two models of OWA and WLC. The results showed that the present and current urban area in terms of environmental and geomorphological parameters in the research is in good relative condition and based on the models used by OWA and WLC, it is 8.8 and 9.6 square kilometers, respectively. Nevertheless, there are inappropriate areas in the direction of urban development and urbanization of Harsin which often include mountain units and high Slope region, Rivers and Faults. The final result of the research also indicates the significant role of geomorphic units in the formation of urban systems And on this basis, we can say The present study, with the existing system-based comparative approach, is an effective model for managing the development of around- cities areas in the future.