基于层次分析-信息量耦合模型的茂名地质灾害风险评价

RISK ASSESSMENT OF GEOLOGICAL DISASTER IN MAOMING BASED ON ANALYTIC HIERARCHY PROCESS-INFORMATION COUPLING MODEL

基于茂名市1:5万地质灾害风险调查数据为基础,通过AHP-信息量法相耦合的加权信息量模型,构建25m×25m栅格评价单元的风险评价体系。结果表明:高风险区面积1457.31km^(2),占总面积12.73%;中风险区面积3360.39km^(2),占总面积29.34%;低风险区面积6633.81km^(2),占总面积57.93%。为茂名市灾害预防、土地利用规划及空间功能管理等领域提供参考依据,对其它类似地区地质灾害风险评价亦具有一定的借鉴意义。

Based on the 1:50000 geological disaster risk survey data of Maoming City,the risk evaluation system of 25m×25m grid evaluation unit was constructed by the weighted information model coupled with AHP-information method.The results indicate that the high-risk area covers an area of 1457.31km^(2),accounting for 12.73%of the total area;The medium risk area covers 3360.39km^(2),accounting for 29.34%of the total area;The low-risk area covers 6633.81km^(2),accounting for 57.93%of the total area.These provide a reference basis for disaster prevention,land use planning,and spatial function management in Maoming City,and also has certain reference significance for geological disaster risk assessment in other similar areas.