Katayoun Omidi - Department of Environment, Faculty of Natural Resources and Earth Sciences, University of Kashan, Kashan, Iran.
Afsaneh Afzali - Department of Environment, Faculty of Natural Resources and Earth Sciences, University of Kashan, Kashan, Iran.
Hossein Vahidi - Department of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
Sheida Mahnam - International Relations, Iranology Foundation, Tehran, Iran.

Background: In this research, among the Multi Criteria Decision Making (MCDM) methods, a combination of VIKOR and TOPSIS methods with fuzzy set theory was used to overcome the uncertainty in the ranking of alternatives. The purpose of this paper was to locate the industries of Kashan City and rank the appropriate alternatives using analytic hierarchical process (AHP) and the prioritization methods of fuzzy VIKOR and fuzzy TOPSIS.Methods: In this study, first, the effective criteria in GIS (Geographic Information System) were examined and standardized according to fuzzy logic. Then, by presenting expert opinion through AHP, the criteria were weighted, and in order to determine suitable places for establishing industries, according to the required minimum area, six alternatives were extracted from the weighted linear combination method. Subsequently, the alternatives were ranked using fuzzy VIKOR and fuzzy TOPSIS methods. The sensitivity analysis was performed in the fuzzy TOPSIS method by shifting the criteria weights and producing different weighting scenarios. The fuzzy VIKOR method was analyzed for different values of the υ variable.Results: Weighting of criteria by AHP showed that the distance from surface water with a weight coefficient of ۰.۲۰۰ was the most important one. according to the required minimum area, six alternatives were extracted from the weighted linear combination method.Conclusion: The sensitivity analysis of both methods showed that ۴۰۵ hectares in the Southeast of Kashan are the best ones to establish industries.

Industrial Site Selection, Fuzzy VIKOR, Fuzzy TOPSIS, Kashan City