Aged dissolved organic carbon exported from rivers of the Tibetan Plateau

doi:10.1371/journal.pone.0178166

	Aged dissolved organic carbon exported from rivers of the Tibetan Plateau
	Kang, SC (Kang, Shichang)4,5; Qu, B (Qu, Bin)1; Sillanpaa, M (Sillanpaa, Mika)1,2; Li, CL (Li, Chaoliu)3; Stubbins, A (Stubbins, Aron)6; Yan, FP (Yan, Fangping)1; Aho, KS (Aho, Kelly Sue)7; Zhou, F (Zhou, Feng)8; Raymond, PA (Raymond, Peter A.)7; Li, CL
刊名	PLOS ONE
	2017
卷号	12 期号:5 页码:e0178166
关键词	Permafrost Carbon Soil Carbon Climate Biolability Nitrogen Temperature Vegetation Storage Matter Pools
DOI	10.1371/journal.pone.0178166
文献子类	Article
英文摘要	The role played by river networks in regional and global carbon cycle is receiving increasing attention. Despite the potential of radiocarbon measurements (C-14) to elucidate sources and cycling of different riverine carbon pools, there remain large regions such as the climate- sensitive Tibetan Plateau for which no data are available. Here we provide new C-14 data on dissolved organic carbon (DOC) from three large Asian rivers (the Yellow, Yangtze and Yarlung Tsangpo Rivers) running on the Tibetan Plateau and present the carbon transportation pattern in rivers of the plateau versus other river system in the world. Despite higher discharge rates during the high flow season, the DOC yield of Tibetan Plateau rivers (0.41 gC m(-2) yr(-1)) was lower than most other rivers due to lower concentrations. Radiocarbon ages of the DOC were older/more depleted (511 +/- 294 years before present, yr BP) in the Tibetan rivers than those in Arctic and tropical rivers. A positive correlation between radiocarbon age and permafrost watershed coverage was observed, indicating that C-14-deplted/ old carbon is exported from permafrost regions of the Tibetan Plateau during periods of high flow. This is in sharp contrast to permafrost regions of the Arctic which export C-14-enriched carbon during high discharge periods.
学科主题	自然地理学
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000402063000023
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8239]
专题	青藏高原研究所_图书馆
通讯作者	Li, CL
作者单位	1.Lappeenranta Univ Technol, Lab Green Chem, Mikkeli, Finland. 2.Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33199 USA. 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China. 4.Chinese Acad Sci, Norwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China. 5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China. 6.Univ Georgia, Dept Marine Sci, Skidaway Inst Oceanog, Savannah, GA USA. 7.Yale Univ, Yale Sch Forestry & Environm Studies, New Haven, CT USA. 8.Peking Univ, Sino France Inst Earth Syst Sci, Coll Urban & Environm Sci, Lab Earth Surface Proc, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Kang, SC ,Qu, B ,Sillanpaa, M ,et al. Aged dissolved organic carbon exported from rivers of the Tibetan Plateau[J]. PLOS ONE,2017,12(5):e0178166.
APA	Kang, SC .,Qu, B .,Sillanpaa, M .,Li, CL .,Stubbins, A .,...&Li, CL.(2017).Aged dissolved organic carbon exported from rivers of the Tibetan Plateau.PLOS ONE,12(5),e0178166.
MLA	Kang, SC ,et al."Aged dissolved organic carbon exported from rivers of the Tibetan Plateau".PLOS ONE 12.5(2017):e0178166.