基于信息量模型与确定性系数模型的曩宋河流域地质灾害易发性评价  

Evaluation of geological hazard susceptibility in Nangsong River basin based on certainty factor and information quantity models

作　　者：何卿 简季[1] HE Qing;JIAN Ji(College of Earth Science,Chengdu University of Technology,Chengdu 610059,Sichuan,China)

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《自然资源信息化》2024年第1期56-63,共8页Natural Resources Informatization

摘　　要：云南省复杂的地质环境与大量的人类工程活动导致地质灾害频发,该区域的地质灾害识别与防治十分重要。本文以云南省梁河县曩宋河流域为研究区,选取高程、坡度、植被覆盖度、河流距离、工程岩组5个评价因子指标,基于确定性系数模型与信息量模型对流域内41处地质灾害区域进行分析并对研究区地质灾害进行易发性评价,利用ROC曲线对评价模型结果进行检验。结果表明,信息量模型检验得到的AUC值为0.804,确定性系数模型检验得到的AUC值为0.781,信息量模型更适用研究区的地质灾害易发性评价。研究结果可为云南省梁河县地质灾害防治工作提供参考。The complex geological environment conditions and a large number of human engineering activities in Yunnan lead to its frequent geological hazards.Therefore,the identification and prevention of geological hazards in this area are very important.This paper takes the Nangsong River basin in Lianghe County,Yunnan as the research area,and selects five evaluation factors which are elevation,slope,vegetation coverage,water system,and engineering petrofabric as evaluation indicators.The 41 geological hazard areas have been classified and the susceptibility of geological hazards in the study area has been evaluated based on CF and information quantity model,and the results of the evaluation model have been tested by using the ROC curve.The results show that the AUC test value obtained by the information quantity model is 0.804,and the AUC test value obtained by the certainty factor model is 0.781,which indicates that the information model is more suitable for the evaluation of geological hazard susceptibility in the study area.The research results can provide certain data support for disaster prevention and mitigation in Lianghe County,Yunnan.

关 键 词：地质灾害 易发性评价 信息量模型 确定性系数模型 曩宋河 

分 类 号：P694[天文地球—地质学]