Aged dissolved organic carbon exported from rivers of the Tibetan Plateau.
The role played by river networks in regional and global carbon cycle is receiving increasing attention. Despite the potential of radiocarbon measurements (14C) to elucidate sources and cycling of different riverine carbon pools, there remain large regions such as the climate-sensitive Tibetan Plate...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0178166 https://doaj.org/article/f73d9e1b7712444995878ef40453ada0 |
id |
ftdoajarticles:oai:doaj.org/article:f73d9e1b7712444995878ef40453ada0 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f73d9e1b7712444995878ef40453ada0 2023-05-15T14:57:43+02:00 Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. Bin Qu Mika Sillanpää Chaoliu Li Shichang Kang Aron Stubbins Fangping Yan Kelly Sue Aho Feng Zhou Peter A Raymond 2017-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0178166 https://doaj.org/article/f73d9e1b7712444995878ef40453ada0 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5446113?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0178166 https://doaj.org/article/f73d9e1b7712444995878ef40453ada0 PLoS ONE, Vol 12, Iss 5, p e0178166 (2017) Medicine R Science Q article 2017 ftdoajarticles https://doi.org/10.1371/journal.pone.0178166 2023-01-08T01:24:19Z The role played by river networks in regional and global carbon cycle is receiving increasing attention. Despite the potential of radiocarbon measurements (14C) 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 14C 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 14C-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 14C-enriched carbon during high discharge periods. Article in Journal/Newspaper Arctic permafrost Directory of Open Access Journals: DOAJ Articles Arctic PLOS ONE 12 5 e0178166 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Bin Qu Mika Sillanpää Chaoliu Li Shichang Kang Aron Stubbins Fangping Yan Kelly Sue Aho Feng Zhou Peter A Raymond Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
topic_facet |
Medicine R Science Q |
description |
The role played by river networks in regional and global carbon cycle is receiving increasing attention. Despite the potential of radiocarbon measurements (14C) 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 14C 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 14C-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 14C-enriched carbon during high discharge periods. |
format |
Article in Journal/Newspaper |
author |
Bin Qu Mika Sillanpää Chaoliu Li Shichang Kang Aron Stubbins Fangping Yan Kelly Sue Aho Feng Zhou Peter A Raymond |
author_facet |
Bin Qu Mika Sillanpää Chaoliu Li Shichang Kang Aron Stubbins Fangping Yan Kelly Sue Aho Feng Zhou Peter A Raymond |
author_sort |
Bin Qu |
title |
Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
title_short |
Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
title_full |
Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
title_fullStr |
Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
title_full_unstemmed |
Aged dissolved organic carbon exported from rivers of the Tibetan Plateau. |
title_sort |
aged dissolved organic carbon exported from rivers of the tibetan plateau. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pone.0178166 https://doaj.org/article/f73d9e1b7712444995878ef40453ada0 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
PLoS ONE, Vol 12, Iss 5, p e0178166 (2017) |
op_relation |
http://europepmc.org/articles/PMC5446113?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0178166 https://doaj.org/article/f73d9e1b7712444995878ef40453ada0 |
op_doi |
https://doi.org/10.1371/journal.pone.0178166 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
5 |
container_start_page |
e0178166 |
_version_ |
1766329841788911616 |