Selection of nomadic tourism sites with GIS and Topsis model ( case study: Chaharmahal and Bakhtiari province)

High tourism abilities in nomadic areas is very essential for development of this country. in this regard, the location of suitable tourism spaces plays an important role in other stages of nomadic tourism planning. the goal of this article is select the best places for nomad tourism in Charmahal and Bakhtiaree province with use of AHP, Topsis model and GIS. the method of this research is descriptive and analytical and the type of research is functional. to locate the spaces, use some layers such as access to Ilrah, distance to the nomadic settlements, distance to the tourist attractions of the province, access to water, electricity, road network and etc. according to classification 10 sites select in province and these sits include : Chelgerd (0.816 score) , Shalil ( 0.630 score) , Barz (0.541 score) , Gale madrese ( 0.478 score) , Samsami (0.426 score) , Shikh alikhan(0.423 score), Maze sokhte ( 0.420 score) , Hiregan (0.381 score) , kori chahar bonicheh ( 0.374 score) and Sharmak (0.266 score). based on this prioritization other stages of the development of tribal tourism development in this province can be based on the equipment and planning of these sites.