Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?

doi:10.1007/s10040-018-1880-5

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院新生代地质与环境重点实验室

	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
刊名	HYDROGEOLOGY JOURNAL
	2019-03-01
卷号	27 期号:2 页码:761-783
关键词	Arid regions China Groundwater recharge Environmental tracers Diffuse and focused recharge
ISSN号	1431-2174
DOI	10.1007/s10040-018-1880-5
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.
资助项目	National Natural Science Foundation of China[41771014] ; National Key Research and Development Program of China[2016YFA0601900]
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研究方向	Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000462179900024
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/91093]
专题	地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者	Zhu, Bingqi
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]. HYDROGEOLOGY JOURNAL,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.