Disaster susceptibility evaluation in typical red-bed areas based on CF-LR coupling method:A case study of Chishui City
CHENG Bin
YANG Genlan
QIN Yigen
HUANG Kaijie
SHI Wenbing
YI Qingbo
WU Yunwu
Abstract：To explore the relationship between geological hazards and weathering regulation in red-bed areas,Chishui City,a typical red-bed area in Guizhou Province,was selected as the research area.Eight influenc-ing factors were selected,including solar radiation,elevation,slope,stratigraphic distribution,rainfall,NDVI,road buffer and topographic relief,and Pearson correlation coefficient was introduced to analyze the covari-ance of the selected influencing factors.The CF model,LR model and the coupling model of CF and LR were used to analyze the geological hazard susceptibility on GIS platform,and the accuracy of the three models was tested by ROC curve method.The results show that the AUC values(offline area)of the three models are 0.854,0.875,and 0.905,respectively.Among them,the coupled model has the highest AUC value,indicating higher evaluation accuracy of the coupled model and more accurate zoning of disaster sus-ceptibility.The research results can provide reference for the prevention of geological disasters in Chishui City and the evaluation of geological disaster susceptibility in the red-bed areas.
Keywords：deterministic coefficient modellogistic regression modelvulnerability evaluationred-bedsolar radiationPearson correlation coefficient
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 51-60,117 )