热带地理Issue(5)：704-711,8.
基于GIS的区县级暴雨洪涝风险评估方法
GIS-Based Risk Assessment Method for County-Level Administrative Regions:A Case Study of Rainstorm and Flood Disasters
摘要
Abstract
Under global warming background, extreme weather events occur frequently, with torrential rains and floors being the most dramatic. In this paper, which is based on disaster system theory and risk evaluation theory, we establish rainstorm and flood risk assessment model through the analysis of fundamental geographic data, weather data, socio-economic data, and historical disaster data, in which four indices of assessment are used respectively. The four indices of assessment are amount and intensity of rainstorm, environmental sensitivity index, vulnerable feature index and disaster resistance ability index. Furthermore, we indicate the key issues that need to be addressed in county-level rainstorm and flood risk assessments, including spatialization, extended sequence and parameter determination. The evaluation model takes account of the various influences of the precipitation, vegetation, rivers, elevation, topographic relief, population, economy, hospitals, agriculture and forestry, water conservancy and medical treatment and public health investment, etc.. We take Shishi, Jinjiang City, Fujian Province, as the study area, which is a multiple place prone to torrential rainstorm and flood. We use GIS technology to generate 100 m×100 m resolution spatial distribution map of hazard risk, hazard-inducing environment map of hazard-inducing environment sensitivity, map of vulnerability of hazard carrier, map of disaster prevention and mitigation capabilities, and map of rainstorm and flood risk assessment. The results show that the highest risk areas are mainly located in Hubin and Fengli sub-district;the higher risk areas are located in the eastern and western parts of Xiangzhi town, Most of the parts of Lingxiu town, south-central parts of Hanjiang town, south-central parts of Baogai town and most of the parts of Jinshang town;the lower risk areas are mainly located in the northern parts of Hanjiang town, the northern parts of Baogai town and most of the parts of Yongning town.关键词
空间化/风险评估/暴雨洪涝/区县级/GISKey words
spatialization/risk assessment/rainstorm and flood/county level分类
资源环境引用本文复制引用
朱晓晨,高玚,高佳琦,李钢,唐会荣..基于GIS的区县级暴雨洪涝风险评估方法[J].热带地理,2014,(5):704-711,8.基金项目
国家自然科学基金项目（41175077）；黔科合重大专项字[2011]6003号；江苏省普通高校研究生科研创新计划项目 （）
