基于层次分析-信息量法的滑坡易发性评价——以江西省浮梁县为例  

Susceptibility Evaluation of Landslide Disaster Based on AHP-information Method:A Case of Fuliang County in Jiangxi Province

作　　者：伍敏婷 孙岳[1] 周子腾 WU Minting;SUN Yue;ZHOU Ziteng(School of Earth Sciences,East China University of Technology,Nanchang,330013,China)

机构地区：[1]东华理工大学地球科学学院,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2023年第2期157-166,共10页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金项目(42162013);江西省数字国土重点实验室开放基金项目(DLLJ201810)。

摘　　要：以江西省浮梁县为例,利用ArcGIS分析高程、坡度、地层岩性、归一化植被指数等9个评价因子,结合历史滑坡数据,基于层次分析-信息量法对研究区滑坡易发性进行了定量评价。结果表明,研究区滑坡灾害形成的影响因素按照影响程度大小依次为水系、坡度、断裂构造、降水量、归一化植被指数、地层岩性、道路、高程和土地利用类型。滑坡高易发区、中易发区、低易发区分别占全区总面积的3.99%、44.35%和51.65%。滑坡易发性分区叠加建筑群得出151个建筑群位于高易发区,集中分布于研究区南部。受试者特征曲线(ROC)检验表明评价结果与实际滑坡分布情况基本相吻合。研究结果可为研究区滑坡综合防治措施提供依据。Nine evaluation factors such as elevation,slope,stratigraphic lithology and normalized difference vegetation index were analyzed by ArcGIS in the Fuliang County,Jiangxi Province.Quantitative evaluation of landslide susceptibility in the study area has been carried out based on AHP-information method in conjunction with historical landslide data.The results show that the influence degrees of landslide in the study area are the slope,rainfall,water system,road,elevation,formation lithology,land use type,fault structure,elevationand normalized differend vegetation index.The high,medium and low landslide susceptible areas account for 3.99%,44.35%and 51.65%of the total area,respectively.It is concluded that 151 buildings are located in the high landslide susceptible area,concentrated in the southern part of the study area.Receiver operating characteristies(ROC)curve test shows that the evaluation results are consistent with the actual landslide situation.This study provides a basis for the comprehensive prevention and control measures of landslide in the Fuliang county.

关 键 词：滑坡 层次分析法 信息量法 易发性评价 浮梁县 

分 类 号：P694[天文地球—地质学]