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

文献类型：期刊论文

作者Li, Zhi3,4; Coles, Anna E.2; Xiao, Jun1,5
刊名CATENA
出版日期2019-10-01
卷号181页码:7
关键词China's Loess Plateau Groundwater source Stable isotopes Impacting factor Evaporation line
ISSN号0341-8162
DOI10.1016/j.catena.2019.104075
通讯作者Li, Zhi(lizhibox@nwafu.edu.cn) ; Xiao, Jun(xiaojun@ieecas.cn)
英文摘要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.
WOS关键词BEDROCK PERMEABILITY ; UNSATURATED ZONE ; RESIDENCE TIME ; SURFACE-WATER ; RECHARGE ; ISOTOPE ; SUSTAINABILITY ; PRECIPITATION ; MECHANISM ; EVOLUTION
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
语种英语
WOS记录号WOS:000477686600008
出版者ELSEVIER
资助机构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
源URL[http://ir.ieecas.cn/handle/361006/13660]  
专题地球环境研究所_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.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
2.Wilfrid Laurier Univ, Yellowknife Res Off, Yellowknife, NT X1A 2P8, Canada
3.State Key Lab Land Degradat & Ecol Restorat North, Yinchuan 750021, Ningxia, Peoples R China
4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
5.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, 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.

入库方式： OAI收割

来源：地球环境研究所

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