Evaluation of Landslide Susceptibility in Zigui County,Hubei Province Based on Information Quantity Method
In this paper,Zigui County,Hubei Province is taken as the research area,and eight evaluation fac-tors such as elevation,water system,road,rock and soil type,aspect,slope,land cover type and annual rain-fall are selected to carry out landslide susceptibility evaluation,and the correlation analysis of each evalua-tion factor is completed using ArcGIS software data analysis tool.The elevation and aspect factors with corre-lation value of evaluation factors|r|>0.1 are eliminated,and the information value of each factor is calculat-ed.The information model is used to evaluate the landslide susceptibility.The study area is divided into four regions:(1)Extremely high susceptibility area,with an area of 140.0864 km2,accounting for 6.18%of the to-tal area of the study area,are mainly distributed along the banks of Yangtze River and its tributaries.(2)High-prone areas,with an area of 1002.445 km2,accounting for 44.23%,are mainly distributed on both sides of the extremely high-prone areas,and some are located in the surrounding areas of Lianghekou Town and Moping Township;(3)The medium-prone area,with an area of 833.8711 km2,accounting for 36.79%,is dis-tributed in strips on both sides of the extremely high-prone area and is scattered.(4)Low-prone areas,with an area of 290.2564 km2,accounting for 12.80%of the total area,are mainly distributed in mountainous areas with sparse population.The results of this study are in good agreement with the actual situation in the study area,which can better reflect the distribution of landslide disasters in the study area and provide a basis for di-saster prevention and mitigation in Zigui County.
landslidesusceptibility assessmentinformation value modelassessment factorsZigui County
万方数据
维普
