Landslide is the one of the most important factors on agricultural lands degradation of Taleghan watershed. Landslide is one type of mass movements causing lands degradation, accelerating soil erosion and delivering sediment to Taleghan dam, annually. Landslide suscepti
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Landslide is the one of the most important factors on agricultural lands degradation of Taleghan watershed. Landslide is one type of mass movements causing lands degradation, accelerating soil erosion and delivering sediment to Taleghan dam, annually. Landslide susceptibility mapping is the first step for landslide hazard assessment and mitigation. The main aim of this study has been the landslide susceptibility mapping in order to identify areas prone to this phenomena and controlling lands degradation in Taleghan watershed. For this purpose, thematic maps of effective factors on landslide, including elevation, slope angle, aspect, plan curvature, mean annual precipitation, mean annual temperature, lithology, land-use, vegetation density, distance from faults, distance from streams and distance from roads, are prepared by using geographical information system (GIS), topographic maps, Satellite images and field survey. These factors have analyzed using multiple regression method to construct the landslide susceptibility maps. The results showed that about 26 percent of watershed lands have been situated in high and very high susceptible area; that most part of this area have been located in lithology gy2 (consist of marl with high gypsum and salt), dry farming land-use and 0-500 meter distance from the faults.
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