层次分析法和GIS技术在河南省雷电灾害风险区划中的应用

根据自然灾害风险评估理论，利用闪电定位资料、地理信息数据、社会经济数据以及雷电灾情等数据，采用层次分析法（AHP法），从致灾因子的危险性、承灾体的暴露度和承灾体的脆弱性方面，研究雷电灾害风险评估及区划方法，建立起评价指标与风险评估的定量关系，形成了河南省雷电灾害风险评估的方法.同时，结合GIS技术，形成了致灾因子危险性分布图、承灾体的暴露度分布图和承灾体的脆弱性分布图，最终叠加形成河南省雷电灾害综合风险区划图.区划结果表明：高风险区主要位于豫东和豫西北大部分地区，低风险区主要位于豫北和豫西南部分地区.

The application of analytic hierarchy process (AHP) and geographic information system (GIS) in lightning disaster risk-zoning in Henan province

Under the guidelines of the natural disaster system theory,this study aims at a methodology for the risk zoning of thunder and lightning in Henan province.Specifically,this study utilizes the AHP method and uses meteorological,geo-informational,socioeconomic,and thunder and lightning disaster data to establisha quantitative relation between the assessment indexes and the risk zoning of thunder and lightning.Considering the disaster-inducing factors,environment of breeding disasters and hazard-bearing bodies.based on the GIS platform,Distribution of the disaster-inducing factors,Vulnerability of Hazard-affected Body,frangibility of Hazard-affected Body were formed.Finally,the result of risk zoning of thunder and lightning over Henan province was achieved via superposition.The results show that ahigh risk of thunder and lighting is mainly in East and Northwest Henan,while low risk is mainly in parts of North Henan and Southwest Henan.