气候变化领域集成服务门户(CCPortal): Hydrological characteristics and water quality change in mountain river valley on Qinghai-Tibet Plateau

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DOI	10.1007/s13201-023-01906-5
	Hydrological characteristics and water quality change in mountain river valley on Qinghai-Tibet Plateau
	Li, Dongsheng; Cui, Buli; Zuo, Fenglin; Zong, Hehua; Yu, Wanxin
发表日期	2023
ISSN	2190-5487
EISSN	2190-5495
卷号	13 期号:4
英文摘要	Management and protection of regional water resources requires an understanding of the hydrological characteristics and water quality changes. In this study, we combined isotopic, geochemical and hydrometric measurements to investigate hydrological characteristics and water quality changes during the interactions between surface water and groundwater in mountain river valley. Our results showed that the stable isotope values in most of the groundwater and river water samples were located above the middle of the local meteoric water line in a mountain river valley. The hydrochemical types of most of the groundwater and river water samples were Ca-Mg-HCO3 and were primarily dominated by rock weathering. The hydrochemical compositions of groundwater and river water were mainly affected by carbonate dissolution and cation exchange, but influences of saltwater intrusion and human activity were found at the lakeside. Precipitation was the main factor affecting the changes in hydrological processes at these groundwater and river water sites and they were also affected by meltwater, soil water and the interaction between groundwater and surface water. The water level of the river increased, and the recharge of the groundwater by river water increased in river valley during the rainy season, which led to an increase runoff path in groundwater. The interaction between the river water and groundwater was affected by the rainfall frequency and intensity, the recharge time of the soil water and the pressure of the river on both sides of the river channels. Additionally, our results indicated that the flow of groundwater into the river will lead to water quality deterioration. The increasing pressure of the river on the groundwater will cause the deterioration of groundwater quality, which will also be affected by saltwater intrusion and human activity. Our results detailed the hydrological characteristics, water quality changes and main influencing factors of the interaction between surface water and groundwater of river valley in mountain, which will be beneficial to promote the reasonable protection of water resources under climate change in the future.
关键词	Groundwater-surface water Water quality Stable isotopes Hydrochemistry River valley
英文关键词	SURFACE-WATER; STABLE-ISOTOPE; CLIMATE-CHANGE; GEOCHEMICAL EVOLUTION; LAKE BASIN; GROUNDWATER; PRECIPITATION; FLOW; CATCHMENT; IMPACTS
WOS研究方向	Water Resources
WOS记录号	WOS:000957159600001
来源期刊	APPLIED WATER SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283434
作者单位	Tongji University; Ludong University; Beijing Normal University
推荐引用方式 GB/T 7714	Li, Dongsheng,Cui, Buli,Zuo, Fenglin,et al. Hydrological characteristics and water quality change in mountain river valley on Qinghai-Tibet Plateau[J],2023,13(4).
APA	Li, Dongsheng,Cui, Buli,Zuo, Fenglin,Zong, Hehua,&Yu, Wanxin.(2023).Hydrological characteristics and water quality change in mountain river valley on Qinghai-Tibet Plateau.APPLIED WATER SCIENCE,13(4).
MLA	Li, Dongsheng,et al."Hydrological characteristics and water quality change in mountain river valley on Qinghai-Tibet Plateau".APPLIED WATER SCIENCE 13.4(2023).