Land Suitability Assessment of Mazandaran Province for Rapeseed Cultivation Based on Multi Criteria Decision Making Evaluation Methods in GIS Environment

GIS.To achieve the land suitability assessment of the study area, climatological and Synoptic data at the provincial level since its establishment in 2011 were established for each of the phenological stages of rapeseed such as temperature, precipitation, daylight-hours, degree of day lgrowth. Sunny hours, number of frost days and relative humidity as well as environmental capability data, including soil type, land use, soil depth, elevation and slope were used. Depending on the purpose and nature of the research, the type of research is applied and the method of research is descriptive-analytical. collecting descriptive information was done by the library linguistic documentation method using library method and then in order to prioritize and evaluate the criteria related to rapeseed cultivation ، based on multi-criteria decision analysis method (MCDM) based on Hierarchical Analysis Process AHP) was used. Finally ، by ​​weighting the prepared layers according to the criteria and model ، the layers were combined and overlapped in GIS environment and the final land suitability assessment layer was prepared for rapeseed cultivation. The results of the discussions showed that the lands of the study area were 15.3% unlimited, 28.2% limited, 48.2% moderate and 8.3% unlimited.