Integrated flood risk assessment and zonation method: a case study in Huaihe River basin, China

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• 作者：Yenan Wu ; Ping-an Zhong ; Yu Zhang ; Bin Xu ; Biao Ma ; Kun Yan
• 关键词：Flood risk assessment ; Risk level zonation ; Index system ; AHP ; GIS
• 刊名：Natural Hazards
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：78
• 期：1
• 页码：635-651
• 全文大小：2,690 KB
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• 作者单位：Yenan Wu (1)
  Ping-an Zhong (1) (2)
  Yu Zhang (1)
  Bin Xu (1)
  Biao Ma (1)
  Kun Yan (1)
  
  1. College of Hydrology and Water Resources, Hohai University, No. 1 Xikang Road, Nanjing, 210098, China
  2. National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, No. 1 Xikang Road, Nanjing, 210098, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Geophysics and Geodesy
  Geotechnical Engineering
  Civil Engineering
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-0840

文摘

Flood risk assessment and risk level zonation is very important for preventing the watershed flood disaster and making disaster mitigation plans. We establish a flood disaster risk assessment model based on GIS and natural disaster risk assessment theory. We build up a risk assessment index system based on hazard of natural environment and vulnerability of economic society. Furthermore, we propose two indices, reservoir storage modulus and flood detention basin modulus, and use them to characterize human intervention capability on flood in the hazard index set. To reduce the occurrence of the inconsistency problems when using analytic hierarchy process (AHP) method in multi-indices comparison, we use the coupled AHP and expert scoring method to determine the weights of indices. We apply the methodology to the Huaihe River basin. The results show that the multi-year average risk zonation map from 1960 to 2010 is consistent with the historical flood disaster distribution, which verifies the applicability of this method in flood disaster risk assessment.