干旱区生态环境知识资源中心(Arid): Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?

Arid

DOI	10.1007/s10040-018-1880-5
	Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?
	Ren, Xiaozong 1,2; Zhu, Bingqi 3; Liu, Min 1; Zhang, Yingzhen 1; He, Zhiming 1; Rioual, Patrick 2
通讯作者	Zhu, Bingqi
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2019
卷号	27 期号:2 页码:761-783
英文摘要	Although water is scarce in most deserts of the world, the middle-latitude desert of Hunshandake, China, has abundant water resources, mainly groundwater. In this study, isotopic and hydrochemical compositions were investigated to understand the recharge of groundwater in this desert. The groundwaters are fresh and depleted in H-2 and O-18, compared with modern precipitation, but have high values of tritium (5-25 TU), indicating that these groundwaters are likely less than 70years old but not of meteoric origin. Clear differences were observed between the north and south parts of the desert. Groundwater in the northern part is characterized by lower landform elevation, lower ion concentrations, higher tritium contents, higher deuterium excess, and more depleted values of H-2 and O-18 than that in the southern part. This indicates a discrepancy between the topographic hydraulic gradient and the isotopic and hydrochemical gradients of groundwater in the desert. It also implies different water sources between the two areas. Combined analysis was further performed on natural waters from the Dali Basin and surrounding mountains. It indicated that groundwater in the north is mainly sourced from the Daxin'Anling Mountains, by leaking of the Xilamulan River water through a thick faulted aquifer. Groundwater in the south has two sources, the Yinshan Mountains and Daxing'Anlin Mountains. Therefore, modern focused recharge is more significant for groundwater recharge in the desert than the mechanisms of diffuse recharge. A conceptual model of groundwater recharge is proposed: the MTVG (mountain water - tectonic fault hydrology - unconfined vadose zone - groundwater) mechanism.
英文关键词	Arid regions China Groundwater recharge Environmental tracers Diffuse and focused recharge
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000462179900024
WOS关键词	BADAIN JARAN DESERT ; PALEO-ASIAN OCEAN ; INNER-MONGOLIA ; WATER RECHARGE ; SANDY LAND ; ENVIRONMENTAL ISOTOPES ; NORTHEAST CHINA ; CLIMATE-CHANGE ; MINQIN BASIN ; FAULT ZONE
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	中国科学院地理科学与资源研究所 ; 中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216167
作者单位	1.TaiYuan Normal Univ, Sch Geog Sci, Jinzhong 030619, Peoples R China; 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China; 3.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	Ren, Xiaozong,Zhu, Bingqi,Liu, Min,et al. Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?[J]. 中国科学院地理科学与资源研究所, 中国科学院地质与地球物理研究所,2019,27(2):761-783.
APA	Ren, Xiaozong,Zhu, Bingqi,Liu, Min,Zhang, Yingzhen,He, Zhiming,&Rioual, Patrick.(2019).Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?.HYDROGEOLOGY JOURNAL,27(2),761-783.
MLA	Ren, Xiaozong,et al."Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?".HYDROGEOLOGY JOURNAL 27.2(2019):761-783.