灾害学2018，Vol.33Issue(2)：83-88,6.DOI:10.3969/j.issn.1000-811X.2018.02.016
极端降水事件下广西流域洪涝社会经济暴露度分析
Study on Social-economic Exposure Degree Model of Basin Flood Hazard of Extreme Precipitation Events in Guangxi
摘要
Abstract
In this paper,Guangxi precipitation data of 90 meteorological stations from 1961 to 2016 is used to determine 12h and 24h extreme precipitation event threshold by digits method.Combined with geographic information data,12h and 24h extreme precipitation space model are established.Then,the 12h and 24h extreme precipitation events distribution maps are generated.With multiple linear regression method,dataset including DMSP/OLS night light data,remote sensing background database,social-economic datum and basic geographic information are used to build Guangxi Social-economic space model at pixel level.On the basis of that,by virtue of GIS technology,social-economic exposure degree model of basin flood hazard of extreme precipitation events happened at different times is constructed.Through this model,100m x 100m flood victims and GDP space distribution map of 12h and 24h extreme precipitation events are drawn.The results show that,social-economic exposure degree of basin flood hazard of extreme precipitation events exhibit obvious spatial and temporal variation.For the 12h events,high exposure degree area,with precipitation from 100mm to 250mm,spread over Nanliujiang river,Yujiang river,Liujiang river,Xunjiang river,Hongshuihe river,Youjiang river,Guijiang river and so on.While,For the 24h events,high exposure degree area,with precipitation from 100mm to 300mm,distribute in Nanliujing river,Yujiang river,Liujiang river,Xunjiang river,Hongshuihe river and so on.关键词
社会经济暴露度/极端降水事件/DMSP/OLS夜间灯光数据/遥感本底数据/GIS/广西流域Key words
social-economic exposure degree/extreme precipitation events/DMSP/OLS night light data/Remote sensing background database/GIS/river's basin of Guangxi分类
资源环境引用本文复制引用
莫建飞,钟仕全,陈燕丽,孙明..极端降水事件下广西流域洪涝社会经济暴露度分析[J].灾害学,2018,33(2):83-88,6.基金项目
广西科学研究与技术开发计划项目资助(桂科攻1355010-9 （）
桂科攻14124004-4-9) （）
