干旱区生态环境知识资源中心(Arid): Hydrogeochemical indicators of a nested groundwater flow system in arid and semi-arid regions: evidence from the Aksu River Basin, Xinjiang, China

Arid

DOI	10.1007/s12665-023-11257-8
	Hydrogeochemical indicators of a nested groundwater flow system in arid and semi-arid regions: evidence from the Aksu River Basin, Xinjiang, China
	Su, Hu; Deng, Yinger; Yang, Hongkun; Li, Pengjie; Duan, Xianqian; Peng, Xin; Chen, Lin; Wang, Ning
通讯作者	Deng, YE
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2023
卷号	82 期号:23
英文摘要	Investigating and studying groundwater flow systems is important for water resources management, for pollution prevention and for maintaining the ecological balance in arid and semi-arid areas. Systematic geophysics and hydrogeological investigations allow us to define the thickness of the Quaternary sedimentary layer, the lateral boundary of the groundwater system, and the depth and basement of water circulation. Hydrogeochemistry and environmental isotopes are used to gain insights into the recharge process, water-rock interactions, hydraulic characteristics and groundwater retention time and to identify groundwater flow systems at all levels in the Aksu River Basin. Owing to the dissolution of carbonate and gypsum minerals and evaporites, cation exchange between Ca2+ (Mg2+) and Na+ (K+), and the evaporation-concentration effect, concentrations of SO42-, Cl-, Na+ and total dissolved solids gradually increase along the flow direction and decrease with depth, indicating that they belong to different groundwater flow systems. Furthermore, the interpretation of stable isotope concentrations such as delta 18O values suggests different degrees of depletion in the horizontal and vertical directions. Combined with the unique structural framework, the particle size variation of loose sediments and the distribution and aggregation of phreatic water with high F and As and soil salinization show the existence of the surface water and groundwater interaction mixing zones and the distribution pattern of multiple local groundwater flow systems. The vertical zonation of 3H and 14C isotope concentrations and unconformable distribution of groundwater residence time further illustrate the hydrodynamic cycle of the local and regional groundwater flow systems. The hydrodynamic and hydrochemical characteristics confirmed the distribution of groundwater flow systems and the complex mixing relationships between groundwater flow systems in the Aksu River Basin under the tectonic conditions since the Neogene in the South Tianshan Mountains.
英文关键词	Groundwater flow system Hydrogeochemistry Environmental isotopes Aksu River Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001105596400003
WOS关键词	STABLE-ISOTOPES ; GEOCHEMICAL EVOLUTION ; THEORETICAL-ANALYSIS ; TIANSHAN MOUNTAINS ; JIANGHAN PLAIN ; DISCHARGE AREA ; CLIMATE-CHANGE ; PRECIPITATION ; WATER ; RECHARGE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396137
推荐引用方式 GB/T 7714	Su, Hu,Deng, Yinger,Yang, Hongkun,et al. Hydrogeochemical indicators of a nested groundwater flow system in arid and semi-arid regions: evidence from the Aksu River Basin, Xinjiang, China[J],2023,82(23).
APA	Su, Hu.,Deng, Yinger.,Yang, Hongkun.,Li, Pengjie.,Duan, Xianqian.,...&Wang, Ning.(2023).Hydrogeochemical indicators of a nested groundwater flow system in arid and semi-arid regions: evidence from the Aksu River Basin, Xinjiang, China.ENVIRONMENTAL EARTH SCIENCES,82(23).
MLA	Su, Hu,et al."Hydrogeochemical indicators of a nested groundwater flow system in arid and semi-arid regions: evidence from the Aksu River Basin, Xinjiang, China".ENVIRONMENTAL EARTH SCIENCES 82.23(2023).