Landslide Susceptibility Zonation Based On The Analytic Hierarchy Process And Information Method

Landslide susceptibility zonation is one of the research hotspots in the field of landslide research. It is important in the process of disaster prevention and land planning. Select Wan Zhou as study area; it is one portion of the Three Gorges Reservoir Area. According to existing landslide statistical data, select lithology, slopegradient, slope structure and reservoir gradeas impact factors. Useanalytic hierarchy process andinformation method to calculate weighted value of each factorrespectively, and then combine them. The landslide susceptibility zonation was done by ArcGIS. This method can unite the advantages of the disaster data and expert experience. According to statistics, resultaccuracy rate is 90.3%. The key areaof landslide disaster prevention can be obtained from the landslide susceptibility zonation map.