In order to explore the formation mechanism of landslides and reveal the development process of landslides,Mayang Miao Autonomous County in Hunan Province was taken as an example,and landslide analysis was conducted for red beds area in Hunan Province based on susceptibility to the selected factors causing disasters,including elevation,slope,terrain ruggedness index(TRI),stratum lithology and distance away from faults,among others.It is found that landslide occurrence is well correlated with several factors,with susceptibility to each factors in the following descending order:type of land use＞elevation＞TRI＞normalized difference vegetation index(NDVI)＞distance away from roads＞slope＞stratum lithology＞distance away from rivers＞average rainfall during recent several years＞distance away from fault,and the corresponding factors with high sensitivity are listed as follows:land used for buildings,elevation[101 m,1 394 m),TRI[47 m,74 m)and NDVI[0.30,0.43).
维普
万方数据