Use of hydrogeochemistry and environmental isotopes for evaluation of groundwater in Qingshuihe Basin, northwestern China

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	Use of hydrogeochemistry and environmental isotopes for evaluation of groundwater in Qingshuihe Basin, northwestern China
	Li, XQ (Li, Xiangquan); Zhang, L (Zhang, Li); Hou, XW (Hou, Xinwei)
刊名	HYDROGEOLOGY JOURNAL
	2008
卷号	16 期号:2 页码:335-348
关键词	arid regions groundwater flow hydrochemistry stable isotopes China
ISSN号	1431-2174
英文摘要	Hydrogeochemistry and environmental isotope data were utilized to understand origin, geochemical evolution, hydraulic interconnection, and renewability of groundwater in Qingshuihe Basin, northwestern China. There are four types of groundwater (1) shallow groundwater in the mountain front pluvial fans, originating from recent recharge by precipitation, (2) deep paleo-groundwater of the lower alluvial plains, which was formed long ago, (3) shallow groundwater in the lower alluvial plains, which has undergone evaporation during the recharge process, and (4) mixed groundwater (shallow and deep groundwater in the plain). The main water types are Na-HCO3, which dominates type (1), and Na-SO4, which dominates types (2) and (3). Geochemical evolution in the upper pluvial fans is mainly the result of CO2 gas dissolution, silicates weathering and cation exchange; in the lower alluvial plains, it is related to mineral dissolution. The evaporative enrichment only produces significant salinity increases in the shallow groundwater of the lower alluvial plains. Shallow groundwater age in the upper plain is 10 years or so, showing a strong renewability. Deep groundwater ages in the lower plain are more than 200 years, showing poor renewability. In the exploitation areas, the renewability of groundwater evidently increases and the circulation period is 70-100 years.
学科主题	环境地质学
WOS关键词	GEOCHEMICAL EVOLUTION ; AQUIFER ; WATER
WOS研究方向	Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000254184800011
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38623]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Peoples R China
推荐引用方式 GB/T 7714	Li, XQ ,Zhang, L ,Hou, XW . Use of hydrogeochemistry and environmental isotopes for evaluation of groundwater in Qingshuihe Basin, northwestern China[J]. HYDROGEOLOGY JOURNAL,2008,16(2):335-348.
APA	Li, XQ ,Zhang, L ,&Hou, XW .(2008).Use of hydrogeochemistry and environmental isotopes for evaluation of groundwater in Qingshuihe Basin, northwestern China.HYDROGEOLOGY JOURNAL,16(2),335-348.
MLA	Li, XQ ,et al."Use of hydrogeochemistry and environmental isotopes for evaluation of groundwater in Qingshuihe Basin, northwestern China".HYDROGEOLOGY JOURNAL 16.2(2008):335-348.