Groundwater and streamflow sources in China's Loess Plateau on catchment scale

doi:10.1016/j.catena.2019.104075

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	Groundwater and streamflow sources in China's Loess Plateau on catchment scale
	Li, Zhi 1,2; Coles, Anna E.3; Xiao, Jun 4,5
通讯作者	Li, Zhi(lizhibox@nwafu.edu.cn) ; Xiao, Jun(xiaojun@ieecas.cn)
	2019-10-01
发表期刊	CATENA
ISSN	0341-8162
卷号	181 页码:7
摘要	Water sustainability is a major challenge on China's Loess Plateau since drying of soil water and runoff is threatening regional water security. Fundamental to effective water management is an understanding of groundwater and streamflow recharge, storage and fluxes. We investigated groundwater - streamflow connectivity and groundwater recharge mechanisms using stable isotope analysis (delta H-2 and delta O-18) of groundwater and streamflow through the dry season in five large catchments (7636-60,916 km(2)) of the Loess Plateau. We found that streamflow and groundwater stable isotope compositions overall vary across catchments and within each catchment primarily explained by hydrogeological conditions and climatic gradients. The streamflow is sourced from a similar groundwater reserves across four catchments with thick ( > 100m) loess cover. The groundwater is likely to be recharged by local precipitation, but it is a mixture of ancient and modern water. This catchment-scale analysis has provided new insights into groundwater recharge mechanisms in regions with thick unsaturated zones and large subsurface water storage, which provides useful information for water resources management.
关键词	China's Loess Plateau Groundwater source Stable isotopes Impacting factor Evaporation line
DOI	10.1016/j.catena.2019.104075
关键词[WOS]	BEDROCK PERMEABILITY ; UNSATURATED ZONE ; RESIDENCE TIME ; SURFACE-WATER ; RECHARGE ; ISOTOPE ; SUSTAINABILITY ; PRECIPITATION ; MECHANISM ; EVOLUTION
收录类别	SCI ; SCI
语种	英语
资助项目	Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwestern China[2017KF006] ; State Key Joint Laboratory of Environmental Simulation and Pollution Control[K20180601] ; Youth Innovation Promotion Association of CAS[2015336]
WOS研究方向	Geology ; Agriculture ; Water Resources
项目资助者	Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwestern China ; State Key Joint Laboratory of Environmental Simulation and Pollution Control ; Youth Innovation Promotion Association of CAS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000477686600008
出版者	ELSEVIER
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13661
专题	加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Li, Zhi; Xiao, Jun
作者单位	1.State Key Lab Land Degradat & Ecol Restorat North, Yinchuan 750021, Ningxia, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 3.Wilfrid Laurier Univ, Yellowknife Res Off, Yellowknife, NT X1A 2P8, Canada 4.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhi,Coles, Anna E.,Xiao, Jun. Groundwater and streamflow sources in China's Loess Plateau on catchment scale[J]. CATENA,2019,181:7.
APA	Li, Zhi,Coles, Anna E.,&Xiao, Jun.(2019).Groundwater and streamflow sources in China's Loess Plateau on catchment scale.CATENA,181,7.
MLA	Li, Zhi,et al."Groundwater and streamflow sources in China's Loess Plateau on catchment scale".CATENA 181(2019):7.