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《Journal of Southwest China Normal University(Natural Science Edition)》 2017-02
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On Flood Risk Assessment and Division in Chongqing Based on GIS

ZHAO Wei;HUANG Jing;ZHANG Zhi-hong;School of Tourism and Land Resource of Chongqing Technology and Business University;Chongqing Rural Land Exchange;  
As one of the important natural disasters,flood disaster has taken great influence on people's production and life.Based on disaster system theory,flood risk assessment is conducted in regards to flood hazard intensity,sensitivity and vulnerability.With Chongqing administrative as the search subject,8 evaluation factors,such as precipitation,terrain,vegetation index,GDP and so on have been taken,with county as an evaluation unit,comprehensive risk assessment of flood disaster in Chongqing based on GIS spatial analysis.The results show that the flood disaster hazard intensity,sensitivity and vulnerability all show obvious spatial and geographic characteristics,and flood disaster hazard intensity shows an increase from west to east,of which the peaks concentrate in the southeastern and northeastern flanks area.Affected by topography,river system,vegetation index,distribution of flood disaster environment sensitivity reflects highly spatial correlation with Yangtze River flows,of which the Peaks concentrate in the areas along the coast of Yangtze River,like Yongchuan,Jiangjin,Jiangbei,Fuling Dianjiang and so on;flood disaster vulnerability indicators have the same spatial distribution with the social and economic development of Chongqing.In general,flood disaster risk level in the study area overall shows a decreasing trend from west to east.Risk level in the economically developed downtown areas and west region of Chongqing is higher,while it is lower in the underdeveloped parts in southeast and northeast of Chongqing.
【Fund】: 教育部人文社科项目(13YJCZH268);; 重庆市决策咨询与管理创新项目(cstc2013jccxA0158);; 重庆市教委科技项目(KJ120726)
【CateGory Index】: P208;X43
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