Integrated risk assessment method of waterlog disaster in Huaihe River Basin of China |
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Authors: | Jin Ju-Liang Fu Juan Wei Yi-Ming Jiang Shang-Ming Zhou Yu-Liang Liu Li Wang You-Zhen Wu Cheng-Guo |
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Institution: | 1.Chengdu Institute of Plateau Meteorology, CMA, Chengdu, 610072, China ;2.School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China ;3.Center for Energy and Environmental Policy Research, Beijing Institute of Technology, Beijing, 100081, China ;4.Sichuan Qingyuan Engineering Consulting Co., Ltd, Chengdu, 610072, China ;5.Key Laboratory of Water Conservancy and Water Resources of Anhui Province, Water Resources Research Institute of Anhui Province and Huaihe River Commission, MWR, Bengbu, 233000, China ; |
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Abstract: | Regional waterlog disaster integrated risk system, affected by natural, social, and economic systems and its combination relationship, is a complex system with certain structure and function. Waterlog disaster integrated risk results from the combined effects of regional environment, impact factors, vulnerability, and disaster-reducing capability of flood hazards in the drainage area. Waterlog disaster integrated risk system can be divided into four subsystems of hazard, vulnerability, disaster-reducing capability, and disaster conditions. Evaluation indexes are selected using fuzzy analytic hierarchy process method, and the evaluation index system is established. Then, the waterlog disaster integrated risk evaluation model is proposed based on set pair analysis method. Taking Huaihe river in Anhui Province of China as the typical area in this study, the results show that the proposed approach is able to obtain the spatial distribution characteristics of waterlog hazard, vulnerability, mitigation capabilities, and integrated disaster risk within the study area. From the quantitative point of view, identification of the areas with high flood risk can provide a scientific basis for the flood management and technical support. |
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