Landslide Susceptibility Mapping Using AHP and GIS Weighted Overlay Method: A Case Study from Ljig, Serbia

Abstract

Landslides are one of the natural hazards that occur frequently in Serbia, causing huge loss of property every year, especially after heavy rainfall events. Due to the geological condition, rapid development activities and other inherent natural conditions, the Ljig municipality has been exposed to landslide hazards. Therefore, the present study concentrates on landslide susceptibility (LS) analysis in this area using the analytical hierarchy process (AHP) and geographic information system (GIS) weighted overlay method. The causative factors considered for the study (slope, geology, pedology, distance from roads, distance from river network, land cover and rainfall) were graded and the result was a map showing areas divided into five classes based on the possibility of landslide occurrence (from very low to very high). According to the landslide susceptibility area map, about 42% of the study area falls into high and very high susceptibility zones and approximately 44% of the area has medium susceptibility for landslide events. The results of this study can be a valuable input for slope management, land use planning and disaster management planning by the responsible authorities.