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Mechanism of groundwater recharge in the middle-latitude desert of eastern Hunshandake, China: diffuse or focused recharge?
Ren, Xiaozong1,2; Zhu, Bingqi3; Liu, Min1; Zhang, Yingzhen1; He, Zhiming1; Rioual, Patrick2
2019-03-01
Source PublicationHYDROGEOLOGY JOURNAL
ISSN1431-2174
Volume27Issue:2Pages:761-783
Corresponding AuthorZhu, Bingqi(zhubingqi@igsnrr.ac.cn)
AbstractAlthough 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.
KeywordArid regions China Groundwater recharge Environmental tracers Diffuse and focused recharge
DOI10.1007/s10040-018-1880-5
WOS KeywordBADAIN JARAN DESERT ; PALEO-ASIAN OCEAN ; INNER-MONGOLIA ; WATER RECHARGE ; SANDY LAND ; ENVIRONMENTAL ISOTOPES ; NORTHEAST CHINA ; CLIMATE-CHANGE ; MINQIN BASIN ; FAULT ZONE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41771014] ; National Key Research and Development Program of China[2016YFA0601900]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
WOS Research AreaGeology ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000462179900024
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/48684
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Bingqi
Affiliation1.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
Recommended Citation
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.
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