عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Considering the important role of landslide in watersheds, the present study has investigated the effective factors in landslide occurrence in Ardal watershed, Chaharmahal Bakhtiari province. In this research, landslide inventory map was prepared using satellite images, aerial photos and field investigation. At the same time, maps of the effective factors in the landslide event were prepared. Slope, direction of gradient, height, lithology, rainfall, distance from fault, river density, distance from road and land use were selected as factors affecting landslide occurrence. Logistic regression method has been used in GIS environment to prepare landslide sensitivity map. Using these factors and land inventory map, landslide susceptibility and the significance of each selected factor for landslide occurrence in the area, were identified by logistic regression method. The results showed that "distance from the river", "land use" and lithology are considered as the most important factors influencing the landslide occurrence in the region. .