干旱区生态环境知识资源中心(Arid): Groundwater hydrochemistry and isotope geochemistry in the Turpan Basin, northwestern China

Arid

	Groundwater hydrochemistry and isotope geochemistry in the Turpan Basin, northwestern China
	Chen Lu; Wang Guangcai; Hu Fusheng; Wang Yajun; Liu Liang
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2014
卷号	6 期号:4 页码:378-388
英文摘要	The Turpan Basin is located in the arid zone of northwestern China and is a typical closed inland basin surrounded by high mountains. It is one of the most arid regions in the world and, as a result, the groundwater in this area is very important for both domestic and agricultural uses. In the present study, the relationships of major elements(K~+, Na~+, Ca~(2+), Mg~(2+), HCO_3~-, SO_4~(2-) and Cl~-) and environmental isotopes(delta~(18)O, delta~2H and T) in groundwater were analyzed to investigate the evolution of the regional hydrochemistry within the Turpan Basin. The hydrochemistry results demonstrate that groundwater with high total dissolved solids(TDS) concentration is dominated by sodium chloride(Na-Cl) and sodium sulfate(Na-SO_4) type water, whereas that with low TDS concentration(typically from near mountain areas) is dominated by calcium bicarbonate(Ca-HCO_3) type water. The evolution of groundwater hydrochemistry within the Turpan Basin is a result of calcium carbonate precipitation, evaporation concentration, cation exchange and dissolution of evaporites(i.e. halite, mirabilite and gypsum). Furthermore, evaporite dissolution associated with irrigation practice plays a key role in the groundwater salinization, especially in the central part of the basin. Environmental isotopes reveal that the groundwater is recharged by precipitation in the mountain areas and fast vertical infiltration of irrigation return flow. In the southern sub-basin the shallow groundwater and the deep groundwater is separated at a depth of about 40 m, with substantial differences in terms of hydrochemical and isotopic characteristics. The results are useful for decision making related to sustainable water resource utilization in the Turpan Basin and other regions in northwestern China.
英文关键词	hydrochemistry environmental isotopes groundwater salinization evaporite dissolution Turpan Basin
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Mineralogy
CSCD记录号	CSCD:5169093
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335364
作者单位	Chen Lu, (Beijing)School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.; Wang Guangcai, (Beijing)School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.; Hu Fusheng, (Beijing)School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.; Wang Yajun, (Beijing)School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China.; Liu Liang, The First Brigade of Hydrogeology, Xinjiang Bureau of Geology and Minerals, Urumqi, Xinjiang 830002, China.
推荐引用方式 GB/T 7714	Chen Lu,Wang Guangcai,Hu Fusheng,et al. Groundwater hydrochemistry and isotope geochemistry in the Turpan Basin, northwestern China[J],2014,6(4):378-388.
APA	Chen Lu,Wang Guangcai,Hu Fusheng,Wang Yajun,&Liu Liang.(2014).Groundwater hydrochemistry and isotope geochemistry in the Turpan Basin, northwestern China.Journal of Arid Land,6(4),378-388.
MLA	Chen Lu,et al."Groundwater hydrochemistry and isotope geochemistry in the Turpan Basin, northwestern China".Journal of Arid Land 6.4(2014):378-388.