Synergistic effect of drought and rainfall events of different patterns on watershed systems

doi:10.1038/s41598-021-97574-z

	Synergistic effect of drought and rainfall events of different patterns on watershed systems
	Qiu, Jiali 1; Shen, Zhenyao 1; Leng, Guoyong 2; Wei, Guoyuan 1
刊名	SCIENTIFIC REPORTS
	2021-09-23
卷号	11 期号:1 页码:18
ISSN号	2045-2322
DOI	10.1038/s41598-021-97574-z
通讯作者	Shen, Zhenyao(zyshen@bnu.edu.cn)
英文摘要	The increase in extreme climate events such as flooding and droughts predicted by the general circulation models (GCMs) is expected to significantly affect hydrological processes, erosive dynamics, and their associated nonpoint source (NPS) pollution, resulting in a major challenge to water availability for human life and ecosystems. Using the Hydrological Simulation Program-Fortran model, we evaluated the synergistic effects of droughts and rainfall events on hydrology and water quality in an upstream catchment of the Miyun Reservoir based on the outputs of five GCMs. It showed substantial increases in air temperature, precipitation intensity, frequency of heavy rains and rainstorms, and drought duration, as well as sediment and nutrient loads in the RCP 8.5 scenario. Sustained droughts followed by intense precipitation could cause complex interactions and mobilize accumulated sediment, nutrients and other pollutants into surface water that pose substantial risks to the drinking water security, with the comprehensive effects of soil water content, antecedent drought duration, precipitation amount and intensity, and other climate characteristics, although the effects varied greatly under different rainfall patterns. The Methods and findings of this study evidence the synergistic impacts of droughts and heavy rainfall on watershed system and the significant effects of initial soil moisture conditions on water quantity and quality, and help to guide a robust adaptive management system for future drinking water supply.
资助项目	National Natural Science Foundation of China[51579011] ; fund for Innovative Research Group of the National Natural Science Foundation of China[51721093]
WOS关键词	NONPOINT-SOURCE POLLUTION ; CLIMATE-CHANGE IMPACT ; MANAGEMENT-PRACTICES ; SOIL-MOISTURE ; DEGREES-C ; RUNOFF ; MODEL ; EVAPOTRANSPIRATION ; PRECIPITATION ; QUALITY
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000698791600119
资助机构	National Natural Science Foundation of China ; fund for Innovative Research Group of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165843]
专题	中国科学院地理科学与资源研究所
通讯作者	Shen, Zhenyao
作者单位	1.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Jiali,Shen, Zhenyao,Leng, Guoyong,et al. Synergistic effect of drought and rainfall events of different patterns on watershed systems[J]. SCIENTIFIC REPORTS,2021,11(1):18.
APA	Qiu, Jiali,Shen, Zhenyao,Leng, Guoyong,&Wei, Guoyuan.(2021).Synergistic effect of drought and rainfall events of different patterns on watershed systems.SCIENTIFIC REPORTS,11(1),18.
MLA	Qiu, Jiali,et al."Synergistic effect of drought and rainfall events of different patterns on watershed systems".SCIENTIFIC REPORTS 11.1(2021):18.