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	Influence of land cover on riverine dissolved organic carbon concentrations and export in the Three Rivers Headwater Region of the Qinghai-Tibetan Plateau
	Ma, Xiaoliang1,2; Liu, Guimin1; Wu, Xiaodong2; Smoak, Joseph M.3; Ye, Linlin4; Xu, Haiyan1; Zhao, Lin2; Ding, Yongjian2,5,6
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-07-15
卷号	630页码:314-322
关键词	Permafrost Carbon cycle Erosion Climate change Riverine transport
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2018.02.152
通讯作者	Liu, Guimin(liuguimin@mail.lzjtu.cn) ; Wu, Xiaodong(wuxd@lzb.ac.cn)
英文摘要	The Qinghai-Tibet-an plateau (QTP) stores a large amount of soil organic carbon and is the headwater region for several large rivers in Asia. Therefore, it is important to understand the influence of environmental factors on river water quality and the dissolved organic carbon (DOC) export in this region. We examined the water physico-chemical characteristics, DOC concentrations and export rates of 7 rivers under typical land cover types in the Three Rivers Headwater Region during August 2016. The results showed that the highest DOC concentrations were recorded in the rivers within the catchment of alpine wet meadow and meadow. These same rivers had the lowest total suspended solids (TSS) concentrations. The rivers within steppe and desert had the lowest DOC concentrations and highest TSS concentrations. The discharge rates and catchment areas were negatively correlated with DOC concentrations. The SLIVA(254) values were significantly negatively correlated with DOC concentrations. The results suggest that the vegetation degradation, which may represent permafrost degradation, can lead to a decrease in DOC concentration, but increasing DOC export and soil erosion. In addition, some of the exported DOC will rapidly decompose in the river, and therefore affect the regional carbon cycle, as well as the water quality in the source water of many large Asian rivers. (C) 2018 Elsevier B.V. All rights reserved.
收录类别	SCI ; ISTP
WOS关键词	PERMAFROST REGIONS ; SOIL ; MATTER ; VEGETATION ; NITROGEN ; BIODEGRADABILITY ; CLIMATE ; THAW ; DEGRADATION ; FRACTIONS
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000432467700033
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557819
专题	寒区旱区环境与工程研究所
通讯作者	Liu, Guimin; Wu, Xiaodong
作者单位	1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, 88 West Anning Rd, Lanzhou 730070, Gansu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Gansu, Peoples R China 3.Univ S Florida, Environm Sci, St Petersburg, FL 33701 USA 4.Nantong Univ, Sch Geog Sci, Nantong 226000, Peoples R China 5.Chinese Acad Sci, Key Lab Ecohydrol River Basin Sci, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China 6.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xiaoliang,Liu, Guimin,Wu, Xiaodong,et al. Influence of land cover on riverine dissolved organic carbon concentrations and export in the Three Rivers Headwater Region of the Qinghai-Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,630:314-322.
APA	Ma, Xiaoliang.,Liu, Guimin.,Wu, Xiaodong.,Smoak, Joseph M..,Ye, Linlin.,...&Ding, Yongjian.(2018).Influence of land cover on riverine dissolved organic carbon concentrations and export in the Three Rivers Headwater Region of the Qinghai-Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,630,314-322.
MLA	Ma, Xiaoliang,et al."Influence of land cover on riverine dissolved organic carbon concentrations and export in the Three Rivers Headwater Region of the Qinghai-Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 630(2018):314-322.

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