Location of the suitable landfill site using geographic information system(case study of heer district of ardebil province)

◌Due to the growing human population on one hand and increasing industrial developmenton the other hand waste production is unavoidable. The main purpose of this research isspatial analysis operation with using GIS technology in order to locate the optimal range forthe landfill of heer district of ardebil province. for this purpose, in the first stage, using 12information layers which includes 9 layers of natural information (environmental) and 3layers of social intelligence economics which related to case study enter the ARC GISsoftware and landfill databases was formed. In the second stage information layers based onexisting standard of four organization:Environmental protrction Agency, the organization ofwater, earth and weather preservation of Canada, management and planning organization ofiran and Iran department of Environment with Network analysis process (ANP) in superdecision software and expert opinion of expert and specialist was weighting, categorized andapplied on the current layers. checking the initial result showing that resulting model of ANPnot only select the landfill are but also, offer other areas.