Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence

doi:10.3390/w10111515

	Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence
	Zhu, Bing-Qi 1; Ren, Xiao-Zong 2; Rioual, Patrick 3
刊名	WATER
	2018-11-01
卷号	10 期号:11 页码:23
关键词	groundwater recharge stable and radioactive isotope ion geochemistry fossil water precipitation middle-latitude desert
ISSN号	2073-4441
DOI	10.3390/w10111515
通讯作者	Zhu, Bing-Qi(zhubingqi@igsnrr.ac.cn)
英文摘要	To gain an insight into the origin of groundwater in the Hunshandake Desert (HSDK), stable and radioactive isotopes and the major ion hydrochemistry of groundwater, as well as other natural waters, were investigated in this desert. The results showed that the groundwaters in the HSDK are freshwater (total dissolved solid (TDS) < 700 mg/L) and are depleted in delta H-2 and delta O-18 when compared with the modern precipitation. The major water types are the Ca-HCO3 and Ca/Mg-SO4 waters. No Cl-type and Na-type waters occurred in the study area. The ionic and depleted stable isotopic signals in groundwater, as well as the high values of tritium contents (5-25 TU), indicate that the groundwaters studied here are young but not of fossil and meteoric water origin, i.e., out of control by the modern and palaeo-direct recharge. A clear difference in the isotopic signals are observed between the groundwaters in the north and south parts of the study area, but the signals are similar between the groundwaters in the north HSDK catchment and its neighboring catchment, the Dali Basin. The topographical elevation decreases from the south (1396 m a.s.l.) to the north (1317 m a.s.l.) and the Dali (1226 m a.s.l.). Groundwaters in the north are characterized by lower chloride and TDS concentrations, higher tritium contents, higher deuterium excess, and more depleted values of delta H-2 and delta O-18 than those in the south. The spatial distribution pattern of these environmental parameters indicates a discrepancy between the hydraulic gradient of groundwater and the isotopic and hydrochemical gradients of groundwater in the HSDK, suggesting different recharge sources between the two parts in the desert. A combined analysis using the isotopic and physiochemical data of natural waters collected from the Dali Basin and the surrounding mountains was performed to investigate this problem. It indicates that groundwaters in the HSDK Desert are recharged from remote mountain areas (about 150-200 km to the east and southeast) but not from the north neighboring catchment.
资助项目	National Natural Science Foundation of China[41771014] ; National Natural Science Foundation of China[41602196] ; National Key Research and Development Program of China[2016YFA0601900]
WOS关键词	BADAIN JARAN DESERT ; PALEO-ASIAN OCEAN ; INNER-MONGOLIA ; SANDY LAND ; ENVIRONMENTAL TRACERS ; ALLUVIAL AQUIFER ; RECHARGE ; DESERTIFICATION ; HYDROLOGY ; XINJIANG
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000451736300022
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/51415]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhu, Bing-Qi
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Taiyuan Normal Univ, Sch Geog Sci, Jinzhong 030319, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Bing-Qi,Ren, Xiao-Zong,Rioual, Patrick. Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence[J]. WATER,2018,10(11):23.
APA	Zhu, Bing-Qi,Ren, Xiao-Zong,&Rioual, Patrick.(2018).Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence.WATER,10(11),23.
MLA	Zhu, Bing-Qi,et al."Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence".WATER 10.11(2018):23.