干旱区生态环境知识资源中心(Arid): Evaluation of groundwater geochemical characteristics and quality in the central and Northern Shaanxi Province, China

Arid

DOI	10.1007/s11631-020-00427-1
	Evaluation of groundwater geochemical characteristics and quality in the central and Northern Shaanxi Province, China
	Yan, Hui; Xiao, Jun; Liu, Ting; Liu, Yujie
通讯作者	Xiao, J
来源期刊	ACTA GEOCHIMICA
ISSN	2096-0956
EISSN	2365-7499
出版年	2020
卷号	39 期号:5 页码:733-740
英文摘要	Groundwater is of vital importance to many aspects of ecosystem services, especially in the central and northern Shaanxi Provence, China,- an area covered by loess deposits and short of water resources. We studied the solute geochemistry and water quality of groundwater in this area to improve the understanding of hydrogeochemical processes in loess deposits area. The results showed that the average pH of groundwaters was 8.03 +/- 0.36 (1 SD) with large ranges (324 - 83,379 mg/L) of the total dissolved solids (TDS). The cations and anions followed the order of Na+ > Ca2+ > Mg2+ > K+ > SiO(2)and HCO3- > Cl- > SO42- F- > NO3-. Most groundwater samples show the HCO3--Na+-Ca(2+)water type and a small number of samples the Na+-Cl(-)type. Irrigation water quality assessments showed that 40% of the groundwater has good water quality, 42% moderate water quality, and 18% (the upper reaches of Wuding River and Wei River) poor water quality with very high salinity. About 40% of groundwater samples were not suitable for drinking due to the high TDS, fluoride, sulfide, and chloride. Gibbs plot and stoichiometry analysis showed that carbonate weathering is the main source of groundwater chemistry in central Shaanxi Province while evaporite dissolution dominates in northern Shaanxi Provence. The loess weathering significantly influences the dissolved solutes of groundwater in the Loess Plateau. The ion-exchange between Mg(2+)and Ca(2+)in groundwater and Na(+)in clay minerals and the deposition of carbonate minerals increased Na(+)but decreased the Ca(2+)in groundwater. Our research results improve our understanding of hydrogeochemical processes that affect the solutes chemistry of groundwater in the loess area and provide essential data to the global groundwater database.
英文关键词	Geochemical characteristics Hydrochemical process Groundwater quality Central and northern Shaanxi
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000559203900001
WOS关键词	EXTREME ARID REGION ; TARIM RIVER-BASIN ; WATER ; CARBONATE ; RECHARGE ; AQUIFER
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
Scopus学科分类	CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China.
来源机构	中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334537
作者单位	[Yan, Hui] Xuchang Univ, Coll Urban Rural Planning & Landscape Architectur, Xuchang 461000, Peoples R China; [Xiao, Jun; Liu, Yujie] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Xiao, Jun] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China; [Liu, Ting] Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China
推荐引用方式 GB/T 7714	Yan, Hui,Xiao, Jun,Liu, Ting,et al. Evaluation of groundwater geochemical characteristics and quality in the central and Northern Shaanxi Province, China[J]. 中国科学院地球环境研究所,2020,39(5):733-740.
APA	Yan, Hui,Xiao, Jun,Liu, Ting,&Liu, Yujie.(2020).Evaluation of groundwater geochemical characteristics and quality in the central and Northern Shaanxi Province, China.ACTA GEOCHIMICA,39(5),733-740.
MLA	Yan, Hui,et al."Evaluation of groundwater geochemical characteristics and quality in the central and Northern Shaanxi Province, China".ACTA GEOCHIMICA 39.5(2020):733-740.