تأثیر تغییرات کاربری اراضی و تغییرات اقلیمی بر روی فرسایش و رسوب حوزۀ آبخیز ده‌بالا

The type and intensity of soil erosion in a region depend on climatic conditions, lowland and elevation of the land, soil, and land use.One of the problems in managing and controlling erosion and sedimentation in the country's watersheds is the lack of statistical data to accurately estimate the amount of erosion and sedimentation. For this purpose, it is necessary to use efficient experimental methods.The purpose of this research is to investigate the trend of land use changes and their effect on erosion and sedimentation using Landsat 7 and 8 satellite images during the years 2012 and 2022, and using the EPM model for calculation in the Dehbala basin of Yazd province.In this study, after preparing the land use map for the study area, educational data were used for evaluation.Next, the Kappa coefficient was used to check the accuracy of the classified images. Zoning maps of erosion and sediment intensity were extracted using land use maps and the EPM model. The most significant land use changes in the 10-year period (2012-2022) were related to the use of gardens. The extent of this land use has increased by 1.28%, and the use of man-made land has also increased by 0.31% in this period.The use of arable land and the use of pasture with poor density have decreased in this period , respectively.The results showed that the most important factors in reducing erosion and sedimentation in the Dehbala watershed are increasing the use of garden and residential land, reducing rainfall, and increasing temperature.