The land capability assessment for the purpose of urban and rural expansion (case study: Shemiranat County)

Shemiranat County in the northeast of Tehran province is one of the tourism destinations in Iran. This area is outstanding for its considered ecological diversity and water supply. During these years، the residential expansion caused some threat to the fragile ecosystem of this area. Considering the inevitability increase in the construction to some extent in this county، determining the appropriate zones for urban and rural development would lessen the subsequent costs. In this article، we used 8 criterions in the GIS environment. The classification of these criterions was done by means of Fuzzy Desirability Functions. The relative importance of each criterion has been calculated by Fuzzy AHP technique. Also، limitation criterions have been applied via Boolean logic. The results suggest that only 12 percent of this area meets the relative requirements for urban and rural land use.