Groundwater recharge mechanism in an integrated tableland of the Loess Plateau, northern China: insights from environmental tracers

doi:10.1007/s10040-017-1599-8

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 > 中国科学院页岩气与地质工程重点实验室

	Groundwater recharge mechanism in an integrated tableland of the Loess Plateau, northern China: insights from environmental tracers
	Huang, Tianming 1,2; Pang, Zhonghe 1,2; Liu, Jilai 3; Ma, Jinzhu 4; Gates, John 5
刊名	HYDROGEOLOGY JOURNAL
	2017-11-01
卷号	25 期号:7 页码:2049-2065
关键词	China Groundwater Recharge/water Budget Unsaturated Zone Groundwater Age Piston Flow
ISSN号	1431-2174
DOI	10.1007/s10040-017-1599-8
文献子类	Article
英文摘要	Assessing groundwater recharge characteristics (recharge rate, history, mechanisms (piston and preferential flow)) and groundwater age in arid and semi-arid environments remains a difficult but important research frontier. Such assessments are particularly important when the unsaturated zone (UZ) is thick and the recharge rate is limited. This study combined evaluations of the thick UZ with those of the saturated zone and used multiple tracers, such as Cl, NO3, Br, H-2, O-18, C-13, H-3 and C-14, to study groundwater recharge characteristics in an integrated loess tableland in the Loess Plateau, China, where precipitation infiltration is the only recharge source for shallow groundwater. The results indicate that diffuse recharge beneath crops, as the main land use of the study area, is 55-71 mm yr(-1) based on the chloride mass balance of soil profiles. The length of time required for annual precipitation to reach the water table is 160-400 yrs. The groundwater is all pre-modern water and paleowater, with corrected C-14 age ranging from 136 to 23,412 yrs. Most of the water that eventually becomes recharge originally infiltrated in July-September. The Cl and NO3 contents in the upper UZ are considerably higher than those in the deep UZ and shallow groundwater because of recent human activities. The shallow groundwater has not been in hydraulic equilibrium with present near-surface boundary conditions. The homogeneous material of the UZ and relatively old groundwater age imply that piston flow is the dominant recharge mechanism for the shallow groundwater in the tableland.
WOS关键词	DEEP UNSATURATED ZONE ; LAND-USE CHANGE ; ISOTOPIC COMPOSITION ; ARID REGIONS ; SOIL-PROFILE ; NITRATE CONCENTRATIONS ; AMARGOSA DESERT ; WATER-RESOURCE ; C-14 ACTIVITY ; CHLORIDE
WOS研究方向	Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000413970900010
资助机构	National Natural Science Foundation of China(41672254 ; Chinese Academy of Sciences(XDB10030603) ; Northern Ordos Basin(DD20160293) ; 41202183) ; National Natural Science Foundation of China(41672254 ; Chinese Academy of Sciences(XDB10030603) ; Northern Ordos Basin(DD20160293) ; 41202183) ; National Natural Science Foundation of China(41672254 ; Chinese Academy of Sciences(XDB10030603) ; Northern Ordos Basin(DD20160293) ; 41202183) ; National Natural Science Foundation of China(41672254 ; Chinese Academy of Sciences(XDB10030603) ; Northern Ordos Basin(DD20160293) ; 41202183)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62438]
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Min Technol, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China 4.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China 5.Climate Corp, San Francisco, CA 94103 USA
推荐引用方式 GB/T 7714	Huang, Tianming,Pang, Zhonghe,Liu, Jilai,et al. Groundwater recharge mechanism in an integrated tableland of the Loess Plateau, northern China: insights from environmental tracers[J]. HYDROGEOLOGY JOURNAL,2017,25(7):2049-2065.
APA	Huang, Tianming,Pang, Zhonghe,Liu, Jilai,Ma, Jinzhu,&Gates, John.(2017).Groundwater recharge mechanism in an integrated tableland of the Loess Plateau, northern China: insights from environmental tracers.HYDROGEOLOGY JOURNAL,25(7),2049-2065.
MLA	Huang, Tianming,et al."Groundwater recharge mechanism in an integrated tableland of the Loess Plateau, northern China: insights from environmental tracers".HYDROGEOLOGY JOURNAL 25.7(2017):2049-2065.