عنوان مقاله [English]
Sistan region faces many restrictions in the suitable water and soil for agriculture. Cultivation of medicinal plants such as isabgol with low moisture requirement and high drought resistance and high value added are important strategies to deal with numerous environmental, economic and social constraints in Sistan region. The purpose of this study was to identify Agro-ecological zoning of isbgol in Sistan region using spatial analysis technique to identify potential areas for cultivation of this plant in Sistan region. Climatic, topographic and hydrological layers of the region were used for this study. For zoning the appropriate planting areas Geographic Information System (GIS) technique in the form of Boolean models and Hierarchical Analysis Processing (AHP) was used. In this study using Arc / GIS 10 equivalence maps were prepared, and then the two-dimensional matrix of each layer was mapped in order of importance to Idrisi software and the degree of importance of each element was determined. At last stage, final maps were extracted by combining maps in Arc / GIS 10. The results showed that most of the areas of Zabol have good potential for cultivation of isabgol. However, parts of the northwest and a limited portion of the southwest and northeast, and scattered parts of the west and southwest, and a limited portion of the northeast is not suitable for isabgol cultivation. The Boolean model also offers better results than the AHP model because of its high precision and limitations in this area.