Abstract:Landslide risk assessment can provide an effective theoretical basis for disaster prevention and mitigation and regional planning,in order to make the evaluation results of landslide risk areas more objective and accurate,the theory of matter-element analysis is introduced for the first time,combined with combination of combination empowerment, and a landslide risk evaluation model based on material-element analysis method and combinatorial empowerment is constructed.Firstly,based on previous studies,9 factors such as elevation,slope,aspect,land type,road distance, hydrological condition,rainfall,fault distance and stratum lithology are selected,the subjective weight of each index is determined by improved analytic hierarchy process(AHP),which ensures that the consistency test of judgment matrixis easier to satisfy,and the objective weight of each index is calculated by entropy weight method.Based on the combination weight of game theory,the combination weight is taken as the input weight of matter-element analysis,and the landslide risk assessment model is established.Finally,in order to verify the validity of the proposed model,in the research area in Shanyang County,Shangluo City,Shanxi Province,the evaluation rate was 96%,which improved 0.22 compared with the AHP-FCE model and the AHP and 0.07 respectively,providing a reference for the landslide risk assessment of other research areas of the same type.