气候变化领域集成服务门户(CCPortal): Water quality in the Tibetan Plateau: Major ions and trace elements in rivers of the "Water Tower of Asia"

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DOI	10.1016/j.scitotenv.2018.08.316
	Water quality in the Tibetan Plateau: Major ions and trace elements in rivers of the "Water Tower of Asia"
	Qu, Bin; Zhang, Yulan; Kang, Shichang; Sillanpaa, Mika
发表日期	2019
ISSN	0048-9697
EISSN	1879-1026
卷号	649
英文摘要	As the "Water Tower of Asia", rivers originating from the Tibetan Plateau provide water resources for more than one billion residents in both its local and surrounding areas. With respect to the essential role that this region plays in terms of water resources in Asia, we provide an overview of the mechanisms governing the water quality, including the major ions and trace elements release, in eleven rivers of the Tibetan Plateau. Overall, the rivers running on the Tibetan Plateau reflect an alkaline aquatic environment, with an average pH of 8.5; and the total dissolved solids (TDS, -339 mg L-1)are much higher than the global average value. Over 80% of the water ionic budget in the rivers of the plateau is comprised of Ca2+, Mg2+, HCO(3)(- )and SO42-. The main mechanisms that control the river water chemistry on the Tibetan Plateau are natural processes and present a visible spatial heterogeneity. For instance, in rivers of the southern Tibetan Plateau, the water quality is mainly controlled by the rock-weathering, while rivers of the central and northern Tibetan Plateau are also largely affected by evaporation-crystallization processes. In general, most of the rivers on the Tibetan Plateau are uncontaminated and still in a pristine condition. However, it should be noted that due to the natural process such as rock-weathering and groundwater leaching, and anthropogenic activities such as urbanization and mining operations, the concentrations of several toxic elements (e.g., As, Cd, Pb, Mn, Hg and TI) in some of the basins are higher than the China national standard (GB) and the World Health Organization (WHO) guidelines for drinking water. With increasing anthropogenic activities on the plateau and changes in the river basins, it is necessary to conduct the long-term monitoring of the river water chemistry of this dimate-sensitive and eco-fragile region. (C) 2018 Elsevier B.V. All rights reserved.
关键词	Rivers Water chemistry Trace elements Tibetan Plateau
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/112044
作者单位	Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Int Joint Lab Climate & Environm Change ILCEC, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Qu, Bin,Zhang, Yulan,Kang, Shichang,et al. Water quality in the Tibetan Plateau: Major ions and trace elements in rivers of the "Water Tower of Asia"[J]. 中国科学院西北生态环境资源研究院,2019,649.
APA	Qu, Bin,Zhang, Yulan,Kang, Shichang,&Sillanpaa, Mika.(2019).Water quality in the Tibetan Plateau: Major ions and trace elements in rivers of the "Water Tower of Asia".SCIENCE OF THE TOTAL ENVIRONMENT,649.
MLA	Qu, Bin,et al."Water quality in the Tibetan Plateau: Major ions and trace elements in rivers of the "Water Tower of Asia"".SCIENCE OF THE TOTAL ENVIRONMENT 649(2019).