干旱区生态环境知识资源中心(Arid): Solute Geochemistry and Water Quality Assessment of Groundwater in an Arid Endorheic Watershed on Tibetan Plateau

Arid

DOI	10.3390/su142315593
	Solute Geochemistry and Water Quality Assessment of Groundwater in an Arid Endorheic Watershed on Tibetan Plateau
	Wang, Fenglin; Yang, Hongjie; Zhang, Yuqing; Wang, Shengbin; Liu, Kui; Qi, Zexue; Chai, Xiaoran; Wang, Liwei; Wang, Wanping; Banadkooki, Fatemeh Barzegari; Senapthi, Venkatramanan; Xiao, Yong
通讯作者	Wang, SB ; Qi, ZX
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:23
英文摘要	Understanding groundwater geochemistry is crucial for water supply in arid regions. The present research was conducted in the arid Mo river watershed on the Tibetan plateau to gain insights into the geochemical characteristics, governing processes and quality of groundwater in arid endorheic watersheds. A total of 28 groundwater samples were collected from the phreatic and confined aquifers for hydrochemical analysis. The results showed that the groundwater was slightly alkaline in all aquifers of the watershed. The phreatic groundwater samples (PGs) and confined groundwater samples (CGs) had the TDS value in the ranges of 609.19-56,715.34 mg/L and 811.86-2509.51 mg/L, respectively. PGs were salter than CGs, especially in the lower reaches. Both the PGs and CGs were dominated by the Cl-Na type, followed by the mixed Cl-Mg center dot Ca type. The toxic elements of NO2- (0.00-0.20 mg/L for PGs and 0.00-0.60 mg/L for CGs), NH4+ (0.00-0.02 mg/L for PGs and 0.00-0.02 mg/L for CGs) and F- (0.00-4.00 mg/L for PGs and 1.00-1.60 mg/L for CGs) exceeded the permissible limits of the Chinese guidelines at some sporadic sites. Water-rock interactions, including silicates weathering, mineral dissolution (halite and sulfates) and ion exchange, were the main contributions to the groundwater chemistry of all aquifers. The geochemistry of PGs in the lower reach was also greatly influenced by evaporation. Agricultural sulfate fertilizer input was responsible for the nitrogen pollutants and salinity of PGs. All CGs and 73.91% of PGs were within the Entropy-weighted water quality index (EWQI) of below 100 and were suitable for direct drinking purposes. Precisely 8.70 and 17.39% of PGs were within the EWQI value in the range of 100-150 (medium quality and suitable for domestic usage) and beyond 200 (extremely poor quality and not suitable for domestic usage), respectively. The electrical conductivity, sodium adsorption ratio, sodium percentage and permeability index indicated that groundwater in most parts of the watershed was suitable for irrigation, and only a small portion might cause salinity, sodium or permeability hazards. Groundwater with poor quality was mainly distributed in the lower reaches. CGs and PGs in the middle-upper reaches could be considered as the primary water resources for water supply. Agricultural pollution should be paid more attention to safeguard the quality of groundwater.
英文关键词	groundwater hydrochemistry geochemical process water quality assessment arid region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000896154100001
WOS关键词	CLIMATE-CHANGE ; QAIDAM BASIN
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394690
推荐引用方式 GB/T 7714	Wang, Fenglin,Yang, Hongjie,Zhang, Yuqing,et al. Solute Geochemistry and Water Quality Assessment of Groundwater in an Arid Endorheic Watershed on Tibetan Plateau[J],2022,14(23).
APA	Wang, Fenglin.,Yang, Hongjie.,Zhang, Yuqing.,Wang, Shengbin.,Liu, Kui.,...&Xiao, Yong.(2022).Solute Geochemistry and Water Quality Assessment of Groundwater in an Arid Endorheic Watershed on Tibetan Plateau.SUSTAINABILITY,14(23).
MLA	Wang, Fenglin,et al."Solute Geochemistry and Water Quality Assessment of Groundwater in an Arid Endorheic Watershed on Tibetan Plateau".SUSTAINABILITY 14.23(2022).