GEOHAZARD SUSCEPTIBILITY ASSESSMENT BASED ON CF-LR MODEL FOR XINYANG CITY,HENAN PROVINCE
Xinyang City of Henan Province,located on the north-south boundary of both geography and climate of China,is prone to geological disasters.The assessment of geohazard susceptibility is of great guiding significance for disaster prevention and reduction.Based on the data analysis,7 indexes including slope gradient,aspect,terrain curvature,distance to water system,distance to faults,nighttime light index and vegetation index are selected and the CF-LR model is used to assess the geohazard susceptibility in Xinyang City.The results show that the geohazard susceptibility in the area can be divided into four categories:extremely high-risk area(accounting for 11.39％of the total area),high-risk area(19.51％),medium-risk area(14.20％)and low-risk area(54.90％).The results are verified to meet the requirements of rationality and accuracy,indicating that the CF-LR model can objectively and accurately assess the geohazard susceptibility in Xinyang City.
geohazardsusceptibility assessmentCF-LR modelHenan Province
万方数据
维普
