: The concept of ecosystem services is used as a new method in spatial planning to create a link between human welfare and ecological sustainability for Therefore, evaluating ecosystem services provides useful information about the sustainable land development. cultural ecosystem services, has received more and more attention. Chaharmahal potential of the region for decision makers. Today, ecotourism, as one of the ecotourism due to its pristine areas and beautiful and diverse landscapes. The and Bakhtiari province has a significant advantage in the development of purpose of this study is to use the ecosystem services approach in zoning Information System (GIS) and Analytic Hierarchy Process (AHP) along with ecotourism potential. This research has been done using multi-criteria fuzzy model in Geographic prioritization of regions in Chaharmahal and Bakhtiari province. First, and 8 sub-criteria (road network, city, village, protected areas, water bodies, ecosystem services were identified, and then criteria appropriate to the conditions of the region were selected. 2 criteria (ecological and infrastructurs), cave, mountain and forest) have been used to zoning areas prone to ecotourism weighted linear composition (WLC) method as well as the gamma and SUM operators development. Then the information layers were collected, prepared and standardized using fuzzy logic. The weight of criteria and sub-criteria were determined by Analytical Hierarchy Process. The layers were combined using the unsuitable for the desired development. In general, the central and northern in the Fuzzy model. The results showed that in WLC method 23%, in Gamma model 29% and in SUM model 25% of the region, is suitable for the development of that Chaharmahal and Bakhtiari province has a high potential in the development ecotourism. In all methods, only about 5% of the total area of the province was parts of the province, in the protected areas and wetlands, have the most, and the development of ecotourism. Considering that a significant area of the the southern and marginal parts of the province have the least suitability in province is prone to ecotourism development, it can be said
