干旱区生态环境知识资源中心(Arid): Shift in precipitation-streamflow relationship induced by multi-year drought across global catchments

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DOI	10.1016/j.scitotenv.2022.159560
	Shift in precipitation-streamflow relationship induced by multi-year drought across global catchments
	Liu, Qiang; Yang, Yuting; Liang, Liqiao; Yan, Denghua; Wang, Xuan; Li, Chunhui; Sun, Tao
通讯作者	Liang, LQ
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	857
英文摘要	Increases in the intensity and frequency of droughts affected by climate changes induce greater uncertainty in precipitation (P) and streamflow (Q) relationship (P-Q relationship). Here, alteration in P-Q relations were assessed resulted from multi-year drought (>= 7 years), lag and amplification effects were analyzed between meteorological and hydrological droughts, and then hydrological legacy induced by droughts were presented using the leaf area index (LAI) and the Horton index (ratio of watershed ET to catchment wetness) in different arid regions of 1210 selected catchments across global catchments. Results show that reduced P causes lower Q in arid regions, while tends to induce a higher Q in humid regions than expected. Generally, the severity and intensity were amplified in hydrological drought compared with its triggering meteorological drought. Interestingly, Q reduction was more likely to be induced by meteorological drought in more arid climates, while more likely to be recovered from Q deficit than meteorological drought in the humid regions. Unexpected, vegetation, stimulated by prolonged meteorological and hydrological droughts, tended to maintain higher LAI and subsequently resulted in a lower Horton index, especially in the humid regions. Combined with a traditional bucket model, a conceptual model was developed to elucidate threshold switching characteristics during the drought propagation, and deduced that vegetation played a vital role in partitioning of P and regulating how the catchment coped with climate changes. These new understanding of the hydrological legacy of
英文关键词	Multi -year drought Drought propagation Precipitation-stream flow relationship shift Hydrological legacy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000897513300003
WOS关键词	VEGETATION WATER-USE ; TERRESTRIAL ECOSYSTEMS ; BASEFLOW SEPARATION ; USE EFFICIENCY ; LIMITED BASIN ; CLIMATE ; FLOW ; RECESSION ; SOIL ; EVAPOTRANSPIRATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398473
推荐引用方式 GB/T 7714	Liu, Qiang,Yang, Yuting,Liang, Liqiao,et al. Shift in precipitation-streamflow relationship induced by multi-year drought across global catchments[J],2023,857.
APA	Liu, Qiang.,Yang, Yuting.,Liang, Liqiao.,Yan, Denghua.,Wang, Xuan.,...&Sun, Tao.(2023).Shift in precipitation-streamflow relationship induced by multi-year drought across global catchments.SCIENCE OF THE TOTAL ENVIRONMENT,857.
MLA	Liu, Qiang,et al."Shift in precipitation-streamflow relationship induced by multi-year drought across global catchments".SCIENCE OF THE TOTAL ENVIRONMENT 857(2023).