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Spatiotemporal variation of flash floods in the Hengduan Mountains region affected by rainfall properties and land use

文献类型：期刊论文

作者Sun, Xiaoyun3,5; Zhang, Guotao3; Wang, Jiao1,4; Li, Chaoyue3,5; Wu, Shengnan2; Li, Yao4,5
刊名NATURAL HAZARDS
出版日期2021-10-30
页码24
关键词Flash flood Spatiotemporal variation Heavy rainfall Cultivated land The Hengduan Mountains
ISSN号0921-030X
DOI10.1007/s11069-021-05061-5
通讯作者Wang, Jiao(wangjiao@imde.ac.cn)
英文摘要Understanding the spatiotemporal characteristics of flash floods is important for reasonable and accurate identification of high-risk regions and for prediction of future hydrological regimes. Therefore, using time series datasets (1979-2015) of historical flash flood events, rainfall, and land use in the Hengduan Mountains region (HMR) of China, this study analyzed the effects of changes in precipitation and land use on spatiotemporal variation of flash floods. Analysis of the linear trend revealed that flash floods increased by 12 events/10 years and that 82% of events occurred in the flood season (June-August). The increase in flash flood events was found closely correlated with the increased frequency (rainstorm days increased by 3.5 d/10 years) and magnitude (rainstorm amount increased by 10.2 mm/10 years) of heavy rainfall as well as the expansion of the area of artificial surfaces (increase of 999 km(2)). Morlet wavelet analysis revealed significant periodic variation in the occurrence of flash floods on scales of 3-7, 8-15, and 21-31 years. On the basis of the standard elliptical difference, we identified displacement of the center of gravity of flash flooding from the northwest toward the southeast. Generally, more disasters were recorded in southern parts of the HMR owing to the frequent occurrence of rainstorms and the increase in area of both cultivated land and artificial surfaces with higher runoff potential. These findings improve understanding regarding the spatiotemporal dynamics of flash floods in the HMR and could support policymakers in identifying high-risk areas in mountainous watershed.
WOS关键词USE/LAND COVER CHANGE ; SOUTHWESTERN CHINA ; TEMPORAL TRENDS ; RIVER-BASIN ; CLIMATE ; IMPACTS ; PRECIPITATION ; DISASTERS ; TEMPERATURE ; STREAMFLOW
资助项目Major Program of National Natural Science Foundation of China[41790432] ; Major Program of National Natural Science Foundation of China[U20A20112] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23090303]
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种英语
WOS记录号WOS:000712948400001
出版者SPRINGER
资助机构Major Program of National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/167718]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Jiao
作者单位1.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan
2.Chongqing Inst Publ Adm, Ctr Emergency Management, Chongqing 400041, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Xiaoyun,Zhang, Guotao,Wang, Jiao,et al. Spatiotemporal variation of flash floods in the Hengduan Mountains region affected by rainfall properties and land use[J]. NATURAL HAZARDS,2021:24.
APA Sun, Xiaoyun,Zhang, Guotao,Wang, Jiao,Li, Chaoyue,Wu, Shengnan,&Li, Yao.(2021).Spatiotemporal variation of flash floods in the Hengduan Mountains region affected by rainfall properties and land use.NATURAL HAZARDS,24.
MLA Sun, Xiaoyun,et al."Spatiotemporal variation of flash floods in the Hengduan Mountains region affected by rainfall properties and land use".NATURAL HAZARDS (2021):24.

入库方式： OAI收割

来源：地理科学与资源研究所

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