摘要
利用基于Arc GIS技术和层次分析法的灾害风险评价模型对广西德保县岩溶内涝灾害进行风险评价,以期为防治岩溶内涝灾害提供科学依据。综合比较德保县降雨条件、社会经济与自然环境等因素,利用层次分析法确定各因子权重,然后利用Arc GIS技术得到德保县岩溶内涝灾害危险性、易损性和风险区划图。风险评价结果表明:广西德保县岩溶内涝高风险区主要集中在人口密集的城关镇,较高风险区主要分布在耕地面积分布较广的北部地区,而东部及西部地区的内涝灾害风险较低。
The paper used the disaster risk evaluation model based on Arc GIS technology and analytic hierarchy process to conduct risk assessment for karst waterlogging disasters in Debao county of Guangxi in order to provide important scientific basis for the prevention and treatment of karst waterlogging. By comparing the factors of Debao country such as rainfall,socio- economic and natural environment,it used AHP to determine the weight each factor,and then made use of Arc GIS to get the hazard and vulnerability zoning map of karst waterlogging disaster. The results indicated that high risk areas are mainly located in Chengguan town of densely- populated areas. The secondary high risk areas are mainly located in the northern area of the county where agricultural acreage is widely distributed. The waterlogging disaster risk in the eastern and western of Debao county is low.
出处
《水资源与水工程学报》
2016年第1期70-74,共5页
Journal of Water Resources and Water Engineering
基金
广西水利厅科技项目(201530)
