干旱区生态环境知识资源中心(Arid): Hydrochemical characteristics and groundwater quality in the thick loess deposits of China

Arid

DOI	10.1007/s11356-021-16020-9
	Hydrochemical characteristics and groundwater quality in the thick loess deposits of China
	Li, Shujian; Su, He; Li, Zhi
通讯作者	Li, Z (corresponding author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China. ; Su, H (corresponding author), Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Shanxi, Peoples R China.
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2021-09
英文摘要	Water quality and quantity should be paid more attention in regions with arid climate and thick vadose zones since the limited groundwater cannot be replenished rapidly once polluted. This study focused on the Loess Plateau of China to investigate the geochemical mechanism affecting groundwater chemistry and to calculate contribution rates of multiple sources to groundwater solutes. We employed multiple methods (diagrams, bivariate analyses, hierarchical cluster analysis (HCA), sodium adsorption ratio (SAR), water quality index (WQI), correlation analysis, and forward model) for the above purposes. We collected 64 groundwater samples in the thick loess deposits in June 2018 (flood season) and April 2019 (dry season). The average concentrations of cation were in the order of Ca2+ > Na+ > Mg2+ > K+ in the flood season, and Na+ > Ca2+ > Mg2+ > K+ in the dry season. The order of anions contents in the flood season and the dry season were HCO3- > SO42- > Cl- > NO3-. The major hydrochemical facies were Ca-HCO3 and Ca center dot Mg-HCO3 in the flood season and Na center dot Ca-HCO3 center dot SO4 and Na-HCO3 in the dry season, respectively. Most of the groundwater (95% in the flood season and 96% in the dry season) was suitable for drinking, and the overall water quality was acceptable for irrigation. Mineral dissolution and cation exchange were important natural processes affecting groundwater chemistry. The forward model showed that the contribution of atmospheric input, anthropogenic input, evaporite dissolution, silicate weathering, and carbonate weathering to solutes in groundwater was 2.3 +/- 1.5%, 5.0 +/- 7.1%, 19.3 +/- 21.4%, 42.8 +/- 27.3%, and 30.6 +/- 27.1% in the flood season, and 9.1 +/- 6.4%, 3.4 +/- 5.2%, 20.3 +/- 15.9, 56.6 +/- 23.2%, and 10.7 +/- 15.4% in the dry season, respectively. Obviously, silicate and carbonate weathering contribute the most to groundwater chemistry in the flood season, while silicate weathering and evaporite dissolution contribute the most in the dry season. Although the overall contribution of anthropogenic inputs was insignificant, it was the dominant source of solutes for local groundwater. This study provides fundamental information for water management in arid areas.
英文关键词	Arid climate Thick vadose zones Hydrochemistry Hierarchical cluster analysis Solute sources Chinese Loess Plateau
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000693907600014
WOS关键词	MAJOR ION CHEMISTRY ; UNSATURATED ZONE ; SHALLOW GROUNDWATER ; TRACE-ELEMENTS ; WATER-QUALITY ; HEALTH-RISK ; RIVER ; RECHARGE ; IMPACTS ; FLUORIDE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363177
作者单位	[Li, Shujian; Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; [Su, He] Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Shujian,Su, He,Li, Zhi. Hydrochemical characteristics and groundwater quality in the thick loess deposits of China[J]. 西北农林科技大学,2021.
APA	Li, Shujian,Su, He,&Li, Zhi.(2021).Hydrochemical characteristics and groundwater quality in the thick loess deposits of China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Li, Shujian,et al."Hydrochemical characteristics and groundwater quality in the thick loess deposits of China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021).