气候变化领域集成服务门户(CCPortal): Climatic; land cover; and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau

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DOI	10.1016/j.scitotenv.2020.142411
	Climatic; land cover; and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau
	Chen M.; Li C.; Spencer R.G.M.; Maie N.; Hur J.; McKenna A.M.; Yan F.
发表日期	2021
ISSN	489697
卷号	754
英文摘要	Alpine rivers in mountainous regions are crucial not only for land-ocean transfer of chemical species and sediments, but also for water, food, and energy security. Here, we examined dissolved organic matter (DOM) from the major alpine waters on the Tibetan Plateau. Our results revealed a decreasing trend of DOM quantity juxtaposed to an increasing trend of aromaticity from the northern to southern plateau. This is potentially caused by a general decreasing gradient of dust load combined with an increasing gradient of precipitation and vegetation from the NW to SE plateau. Furthermore, most proglacial streams and smaller tributaries were found to be relatively dominated by tyrosine-like fluorescent DOM from glaciers. In contrast, most main stems of rivers and tributaries within larger catchment basins were more controlled by humic-like fluorescent DOM from terrestrial origins. Condensed aromatics accounts for 14–21% of molecular formulas for riverine DOM, much higher than the world's average of ~11%, which indicated anthropogenic black soot pollution. In addition, there is a higher level of DOM amount in the monsoon season than in winter, and DOM characteristics varied more widely (dissolved organic carbon concentration: 0.2-37 mg-C L−1, Fluorescence Index: 1.2-1.8) on the Tibetan Plateau in comparison to other global alpine watersheds. This suggests heterogeneous land cover, anthropogenic, and climatic factors at play, which is reflected in DOM quantity and quality, over the highest plateau on Earth. © 2020 Elsevier B.V.
英文关键词	DOM; Dust storm; EEM-PARAFAC; FT-ICR MS; Glacier; Permafrost
语种	英语
scopus关键词	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/158299
作者单位	Environmental Program; Guangdong Technion - Israel Institute of Technology; Shantou; 515063; China; CAS Key Laboratory of Tibetan Environment Changes and Land Surface Processes; Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Beijing; 100101; China; CAS Center for Excellence in Tibetan Plateau Earth Sciences; Chinese Academy of Sciences; Beijing; 100101; China; Department of Earth; Ocean and Atmospheric Science; Florida State University; Tallahassee; FL 32306; United States; School of Veterinary Medicine; Kitasato University; 23-35-1 Higashi; Towada; Aomori 034-8628; Japan; Department of Environment & Energy; Sejong University; Seoul; 05006; South Korea; National High Magnetic Field Laboratory; Tallahassee; FL 32310; United States; State Key Laboratory of Cryospheric Sciences; Northwest Institute of Eco-Environment and Resources; Chinese Academy of Sciences; Lanzhou; 730000; China
推荐引用方式 GB/T 7714	Chen M.,Li C.,Spencer R.G.M.,et al. Climatic; land cover; and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,754.
APA	Chen M..,Li C..,Spencer R.G.M..,Maie N..,Hur J..,...&Yan F..(2021).Climatic; land cover; and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau.,754.
MLA	Chen M.,et al."Climatic; land cover; and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau".754(2021).