气候变化领域集成服务门户(CCPortal): The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northwest China

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DOI	10.1007/s10040-007-0216-7
	The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northwest China
	Zhu, G. F.; Su, Y. H.; Feng, Q.
发表日期	2008
ISSN	1431-2174
EISSN	1435-0157
起始页码	167
结束页码	182
卷号	16 期号:1
英文摘要	A combination of isotopic and chemical indicators has been used to characterize rainfall, surface water and groundwater in the Heihe River Basin, China. Surface- vs. groundwater chemistry data enabled geographical zones and chemical types to be differentiated. The dissolution of halite, Glauber's salt, gypsum, dolomite and calcite determine Na+, Cl-, Mg2+, Ca2+, SO42- and HCO3- chemistry, but other processes such as evaporation, ion exchange, and deposition also influence the water composition. The majority of deep confined groundwaters are tritium-free and less mineralized than in the shallow aquifer. Radiocarbon values in the deeper groundwaters range from 18.8 to 38.9 pmc, and 80 pmc probably represents the upper limit of initial C-14 activity; this yields ages of approximately 5,960-11,971 years BP, which is about 3,000 years older than those calculated by models in previous work. The shallow aquifer exhibits fairly high and variable tritium activities (4-75 TU), evidence of recent recharge and low residence time (<60 years), which is in line with estimates from previous work. Isotopic signatures indicate formation of deeper groundwaters in a colder and wetter climate during the late Pleistocene and Holocene. The results suggested that significant changes are urgently needed in water-use strategy to achieve sustainable development.
英文关键词	arid regions; groundwater; surface-water relations; hydrochemistry; stable isotopes; Northwest China
WOS研究方向	Geology ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS关键词	MECHANISMS ; RESOURCES ; RECHARGE ; CHEMISTRY
WOS记录号	WOS:000252943400013
来源期刊	HYDROGEOLOGY JOURNAL
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239395
作者单位	[Zhu, G. F.] Lanzhou Univ, Inst Bioinformat, Sch Math & Stat, Lanzhou 730000, Peoples R China; [Su, Y. H.; Feng, Q.] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhu, G. F.,Su, Y. H.,Feng, Q.. The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northwest China[J]. 中国科学院西北生态环境资源研究院,2008,16(1).
APA	Zhu, G. F.,Su, Y. H.,&Feng, Q..(2008).The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northwest China.HYDROGEOLOGY JOURNAL,16(1).
MLA	Zhu, G. F.,et al."The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northwest China".HYDROGEOLOGY JOURNAL 16.1(2008).