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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, Meilian; Li, Chaoliu; Spencer, Robert G. M.; Maie, Nagamitsu; Hur, Jin; McKenna, Amy M.; Yan, Fangping
通讯作者	Chen, ML (通讯作者)，Guangdong Technion Israel Inst Technol, Environm Program, Shantou 515063, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
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 similar to 11%, which indicated anthropogenic black soot pollution. In addition, there isa 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. (C) 2020 Elsevier B.V. All rights reserved.
关键词	LIGHT-ABSORPTION CHARACTERISTICS CHEMICAL-COMPOSITION CARBON DOC PERMAFROST STREAM MASS GLACIERS RESOLUTION ANCIENT PRECIPITATION
英文关键词	DOM; Glacier; Permafrost; EEM-PARAFAC; FT-ICR MS; Dust storm
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000593901600004
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/255036
作者单位	[Chen, Meilian] Guangdong Technion Israel Inst Technol, Environm Program, Shantou 515063, Peoples R China; [Li, Chaoliu] Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Key Lab Tibetan Environm Changes & Land Surfa, Beijing 100101, Peoples R China; [Li, Chaoliu] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Spencer, Robert G. M.] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA; [Maie, Nagamitsu] Kitasato Univ, Sch Vet Med, 23-35-1 Higashi, Towada, Aomori 0348628, Japan; [Hur, Jin] Sejong Univ, Dept Environm & Energy, Seoul 05006, South Korea; [McKenna, Amy M.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA; [Yan, Fangping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Meilian,Li, Chaoliu,Spencer, Robert 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, Meilian.,Li, Chaoliu.,Spencer, Robert G. M..,Maie, Nagamitsu.,Hur, Jin.,...&Yan, Fangping.(2021).Climatic, land cover, and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,754.
MLA	Chen, Meilian,et al."Climatic, land cover, and anthropogenic controls on dissolved organic matter quantity and quality from major alpine rivers across the Himalayan-Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 754(2021).