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Groundwater recharge in an arid grassland as indicated by soil chloride profile and multiple tracers

文献类型：期刊论文

作者Huang, Tianming1,2,3; Pang, Zhonghe1,3; Liu, Jilai4; Yin, Lihe5; Edmunds, W. Mike6
刊名HYDROLOGICAL PROCESSES
出版日期2017-02-28
卷号31期号:5页码:1047-1057
关键词Arid Area China Chloride Mass Balance Groundwater Recharge Soil Profile
ISSN号0885-6087
DOI10.1002/hyp.11089
文献子类Article
英文摘要Previous studies have shown that shallow groundwater in arid regions is often not in equilibrium with near-surface boundary conditions due to human activities and climate change. This is especially the case where the unsaturated zone is thick and recharge rate is limited. Under this nonequilibrium condition, the unsaturated zone solute profile plays an important role in estimating recent diffuse recharge in arid environments. This paper combines evaluation of the thick unsaturated zone with the saturated zone to investigate the groundwater recharge of a grassland in the arid western Ordos Basin, NW China, using the soil chloride profiles and multiple tracers (H-2, O-18, C-13, C-14, and water chemistry) of groundwater. Whereas conventional water balance and Darcy flux measurements usually involve large errors in recharge estimations for arid areas, chloride mass balance has been widely and generally successfully used. The results show that the present diffuse recharge beneath the grassland is 0.11-0.32 mm/year, based on the chloride mass balance of seven soil profiles. The chloride accumulation age is approximately 2,500 years at a depth of 13 m in the unsaturated zone. The average Cl content in soil moisture in the upper 13 m of the unsaturated zone ranges from 2,842 to 7,856 mg/L, whereas the shallow groundwater Cl content ranges from 95 to 351 mg/L. The corrected C-14 age of shallow groundwater ranges from 4,327 to 29,708 years. Stable isotopes show that the shallow groundwater is unrelated to modern precipitation. The shallow groundwater was recharged during the cold and wet phases of the Late Pleistocene and Holocene humid phase based on palaeoclimate, and consequently, the groundwater resources are nonrenewable. Due to the limited recharge rate and thick unsaturated zone, the present shallow groundwater has not been in hydraulic equilibrium with near-surface boundary conditions in the past 2,500 years.
WOS关键词ENVIRONMENTAL TRACERS ; NORTHWESTERN CHINA ; UNSATURATED ZONE ; LAND-USE ; INNER-MONGOLIA ; LAKE EVOLUTION ; TENGGER DESERT ; ORDOS PLATEAU ; MURRAY BASIN ; WATER
WOS研究方向Water Resources
语种英语
WOS记录号WOS:000394901800007
出版者WILEY
资助机构Chinese Academy of Sciences(XDB10030603) ; Foundation of Key Laboratory of Western China's Environmental Systems Hydrogeological Investigation(DD20160293) ; National Natural Science Foundation of China(41672254 ; 41202183) ; Chinese Academy of Sciences(XDB10030603) ; Foundation of Key Laboratory of Western China's Environmental Systems Hydrogeological Investigation(DD20160293) ; National Natural Science Foundation of China(41672254 ; 41202183) ; Chinese Academy of Sciences(XDB10030603) ; Foundation of Key Laboratory of Western China's Environmental Systems Hydrogeological Investigation(DD20160293) ; National Natural Science Foundation of China(41672254 ; 41202183) ; Chinese Academy of Sciences(XDB10030603) ; Foundation of Key Laboratory of Western China's Environmental Systems Hydrogeological Investigation(DD20160293) ; National Natural Science Foundation of China(41672254 ; 41202183)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53028]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Pang, Zhonghe
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Lanzhou Univ, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.China Univ Min & Technol, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China
5.China Geol Survey, Xian Ctr Geol Survey, Xian 710054, Peoples R China
6.Univ Oxford, Sch Geog & Environm, Oxford OX1 3QY, England
推荐引用方式
GB/T 7714		 Huang, Tianming,Pang, Zhonghe,Liu, Jilai,et al. Groundwater recharge in an arid grassland as indicated by soil chloride profile and multiple tracers[J]. HYDROLOGICAL PROCESSES,2017,31(5):1047-1057.
APA Huang, Tianming,Pang, Zhonghe,Liu, Jilai,Yin, Lihe,&Edmunds, W. Mike.(2017).Groundwater recharge in an arid grassland as indicated by soil chloride profile and multiple tracers.HYDROLOGICAL PROCESSES,31(5),1047-1057.
MLA Huang, Tianming,et al."Groundwater recharge in an arid grassland as indicated by soil chloride profile and multiple tracers".HYDROLOGICAL PROCESSES 31.5(2017):1047-1057.

入库方式： OAI收割

来源：地质与地球物理研究所

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