Abstract: Lingyuan City lies in the west of Liaoning Province where mountain geological disasters frequently occur. Based on GIS,six indices,i.e.,topography,lithology,structure,rainfall,land-use type and road are selected for the assessment of geological disasters. The sensitivity of various indices are based on 68 historically happened disasters,and the weights of the factors are determined by information models,statistical models and analytic hierarchy process (AHP) separately. The synthetic appraisal o...