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Analysis and Projection of Flood Hazards over China

Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education, Nanning Normal University, Nanning 530001, China
Key Lab of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
School of Geography and Planning, Nanning Normal University, Nanning 530001, China
Author to whom correspondence should be addressed.
Water 2019, 11(5), 1022;
Received: 30 April 2019 / Revised: 10 May 2019 / Accepted: 11 May 2019 / Published: 16 May 2019
(This article belongs to the Special Issue Water Resources Management Strategy Under Global Change)
Floods have been experienced with greater frequency and more severity under global climate change. To understand the flood hazard and its variation in the future, the current and future flood hazards in the 21st century in China are discussed. Floods and their trends are assessed using the accumulation precipitation during heavy rainfall process (AP_HRP), which are calculated based on historical meteorological observations and the outputs of a global climate model (GCM) under three Representative Concentration Pathway (RCP) scenarios. The flood-causing HRPs counted by the flood-causing critical precipitation (the 60% fractile of AP_HRP) capture more than 70% of historical flood events. The projection results indicate that the flood hazards could increase under RCP4.5 and RCP8.5 and increase slightly under RCP2.6 during the 21st century (2011–2099). The spatial characteristics of flood hazards and their increasing trends under the three RCPs are similar in most areas of China. More floods could occur in southern China, including Guangdong, Hainan, Guangxi and Fujian provinces, which could become more serious in southeastern China and the northern Yunnan province. Construction of water conservancy projects, reservoir dredging, improvement of drainage and irrigation equipment and enhancement of flood control and storage capacity can mitigate the impacts of floods and waterlogging on agriculture. View Full-Text
Keywords: heavy rainfall process; flood hazard; flood projection; RCPs heavy rainfall process; flood hazard; flood projection; RCPs
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MDPI and ACS Style

Liang, Y.; Wang, Y.; Zhao, Y.; Lu, Y.; Liu, X. Analysis and Projection of Flood Hazards over China. Water 2019, 11, 1022.

AMA Style

Liang Y, Wang Y, Zhao Y, Lu Y, Liu X. Analysis and Projection of Flood Hazards over China. Water. 2019; 11(5):1022.

Chicago/Turabian Style

Liang, Yulian; Wang, Yongli; Zhao, Yinjun; Lu, Yuan; Liu, Xiaoying. 2019. "Analysis and Projection of Flood Hazards over China" Water 11, no. 5: 1022.

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