干旱区生态环境知识资源中心(Arid): Partitioning groundwater recharge sources in multiple aquifers system within a desert oasis environment: Implications for water resources management in endorheic basins

Arid

DOI	10.1016/j.jhydrol.2019.124212
	Partitioning groundwater recharge sources in multiple aquifers system within a desert oasis environment: Implications for water resources management in endorheic basins
	Guo, Xiaoyan 1,2; Feng, Qi1,2 ; Si, Jianhua1,2 ; Xi, Haiyang 1,2; Zhao, Yan 3; Deo, Ravinesh C.4,5
通讯作者	Guo, Xiaoyan ; Feng, Qi
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	579
英文摘要	The global expansion of irrigation-based agricultural practices is causing an overexploitation of groundwater resources. A thorough understanding of groundwater recharge processes is necessary for restoring groundwater and improving water resources management, especially in desert oasis aquifers in endorheic basins. In this paper, the Ejina Oasis in the downstream of Heihe River Basin was selected as the representative case for such an endeavor. Based on stable isotopes and end member mixing analysis, we found that the shallow groundwater was modem water, with 13% originating from local precipitation and 87% from river water infiltration. The semi-confined groundwater is a mixture of shallow groundwater (30%), lateral groundwater flowing from the middle Heihe River Basin (MHR; 52%), and confined groundwater (18%). Confined groundwater was old water formed in paleo-climatic humid and cold conditions. Shallow groundwater levels were restored substantially after implementation of the Ecological Water Diversion Project (EWDP) began in 2000 in the Heihe River Basin, but the semi-confined groundwater levels still declined slowly. These different responses to EWDP are attributed to the differences in primary recharge sources of the two aquifers. Because river water infiltration was the main sources of shallow groundwater, increases in river discharge into the Ejina Oasis resulted in increased shallow groundwater levels over a short time scale. Continued over-pumping of groundwater for irrigation in the MHR reduced lateral groundwater flow into the lower Heihe River Basin, which was the primary source of semi-confined groundwater. For successful groundwater restoration and maintenance of groundwater for the future, EWDP implementation must integrate water management of river water and groundwater diversion across the whole basin. Our results can provide useful information on policy decision makers for sustainable use of water resources in the oases of other similar watersheds around the world.
英文关键词	Oasis Aquifer Stable isotope Groundwater recharge Water resources management
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000500371200052
WOS关键词	HEIHE RIVER-BASIN ; STABLE-ISOTOPES ; HYDROGEOCHEMICAL EVOLUTION ; HYDROLOGICAL PROCESSES ; NORTH-AFRICA ; EJINA BASIN ; IRRIGATION ; DYNAMICS ; STRATEGIES ; DEPLETION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311305
作者单位	1.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China; 2.Alashan Desert Ecohydrol Expt Res Stn, Lanzhou, Gansu, Peoples R China; 3.Yellow River Engn Consulting Co Ltd, 109 Jinshui Rd, Zhengzhou, Henan, Peoples R China; 4.Univ Southern Queensland, Sch Agr Computat & Environm Sci, Int Ctr Sustainable Agr Syst, Springfield, Qld, Australia; 5.Univ Southern Queensland, Ctr Appl Climate Sci ICACS, Springfield, Qld, Australia
推荐引用方式 GB/T 7714	Guo, Xiaoyan,Feng, Qi,Si, Jianhua,et al. Partitioning groundwater recharge sources in multiple aquifers system within a desert oasis environment: Implications for water resources management in endorheic basins[J],2019,579.
APA	Guo, Xiaoyan,Feng, Qi,Si, Jianhua,Xi, Haiyang,Zhao, Yan,&Deo, Ravinesh C..(2019).Partitioning groundwater recharge sources in multiple aquifers system within a desert oasis environment: Implications for water resources management in endorheic basins.JOURNAL OF HYDROLOGY,579.
MLA	Guo, Xiaoyan,et al."Partitioning groundwater recharge sources in multiple aquifers system within a desert oasis environment: Implications for water resources management in endorheic basins".JOURNAL OF HYDROLOGY 579(2019).