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学科主题: 地理学::自然地理学
题名: Aged dissolved organic carbon exported from rivers of the Tibetan Plateau
作者: Qu, B (Qu, Bin)1; Sillanpaa, M (Sillanpaa, Mika)1, 2; Li, CL (Li, Chaoliu)3; Kang, SC (Kang, Shichang)4, 5; 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
通讯作者: Li, CL
关键词: PERMAFROST CARBON ; SOIL CARBON ; CLIMATE ; BIOLABILITY ; NITROGEN ; TEMPERATURE ; VEGETATION ; STORAGE ; MATTER ; POOLS
刊名: PLOS ONE
发表日期: 2017
DOI: 10.1371/journal.pone.0178166
卷: 12, 期:5, 页:e0178166
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Multidisciplinary Sciences ; Science & Technology - Other Topics
研究领域[WOS]: Science & Technology - Other Topics
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.
语种: 英语
WOS记录号: WOS:000402063000023
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8239
Appears in Collections:图书馆_期刊论文

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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.

Recommended Citation:
Qu, B ,Sillanpaa, M ,Li, CL ,et al. Aged dissolved organic carbon exported from rivers of the Tibetan Plateau[J]. PLOS ONE,2017,12(5):e0178166.
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