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DOI10.1007/s11069-020-04372-3
Evaluating pluvial flood hazard for highly urbanised cities: a case study of the Pearl River Delta Region in China
Jian W.; Li S.; Lai C.; Wang Z.; Cheng X.; Lo E.Y.-M.; Pan T.-C.
发表日期2021
ISSN0921030X
起始页码1691
结束页码1719
卷号105期号:2
英文摘要Rapid urbanisation and economic growth in developing Asian countries have exacerbated their exposure to flood hazards, particularly evident in low-lying urban cities that are currently facing increasing risks from extreme precipitations, likely made worse by the impending climate change. We present a set of simplified indices representative of the characteristics of rainfall-run-off process for evaluating pluvial flood hazard using the fuzzy comprehensive evaluation method. The highly urbanised Pearl River Delta (PRD) region in southern China is studied as an example of mapping the regional pluvial flood hazard and assessing the socio-economic exposure at risk. The developed hazard map captures the broad patterns of high flood hazard zones when compared with reported surface water flooding hotspots and the PRD riverine flood map from the 2015 Global Assessment Report. Further analysis on the regional socio-economic profiles suggests that most PRD cities are faced with large flood loss potential, with estimates of approximate 23 million people and 2.4 trillion RMB gross domestic product exposed to high flood hazard. Mega cities Guangzhou and Shenzhen top the ranking with over 20–40% of their dense urban settlements in the high flood hazard zone. This highlights the impact of human activities on the natural surface run-off process, and the need for robust flood hazard assessment for better understanding and design of holistic solutions towards more adequate flood mitigation systems for continuous urbanisation and future climate conditions. © 2020, Springer Nature B.V.
关键词FloodFuzzy comprehensive evaluationHazard assessmentPearl River Delta (PRD)Urbanisation
英文关键词economic growth; flood; fuzzy mathematics; hazard assessment; human activity; rainfall-runoff modeling; socioeconomic impact; urban area; urbanization; China; Guangdong; Guangzhou; Shenzhen; Zhujiang Delta
语种英语
来源期刊Natural Hazards
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/206305
作者单位Institute of Catastrophe Risk Management, Nanyang Technological University, Singapore, Singapore; School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore; Green Buildings and Smart Cities Program, Sino-Singapore International Joint Research Institute (SSIJRI), Guangzhou, 510000, China
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GB/T 7714
Jian W.,Li S.,Lai C.,et al. Evaluating pluvial flood hazard for highly urbanised cities: a case study of the Pearl River Delta Region in China[J],2021,105(2).
APA Jian W..,Li S..,Lai C..,Wang Z..,Cheng X..,...&Pan T.-C..(2021).Evaluating pluvial flood hazard for highly urbanised cities: a case study of the Pearl River Delta Region in China.Natural Hazards,105(2).
MLA Jian W.,et al."Evaluating pluvial flood hazard for highly urbanised cities: a case study of the Pearl River Delta Region in China".Natural Hazards 105.2(2021).
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