ارزيابي شدت بيابان زايي دشت سگزي با بهره گيري از مدل IMDPA

Evaluation of Desertification Intensity in Segzi Plain Using IMDPA Model

The eastern part of Esfahan especially Varton and Segzi plains are considered as the arid lands of the country. In this area due to the existence of sensitive soils, desertification is increasing. IMDPA model was selected to study the most effective criterion and indicator in desertification process in the Segzi region. In this case study three criteria including: water, vegetation cover and land were studied and some indicators for each criterion were considered based on the local condition. Then the final map of desertification intensity of the region was prepared by composing the layers and using of their geometrical average. According to the three selected criteria, the map of desertification shows the high and very high levels of desertification in the Segzi region. The water criterion with average value of 3.97 was settled in very high class while the land criterion with value of 3.26 and vegetation criterion with value of 3.12 were considered as in high class of desertification.