Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios.
The Tibetan Plateau is an important component of the global carbon cycle due to the large permafrost carbon pool and its vulnerability to climate warming. The Tibetan Plateau has experienced a noticeable warming over the past few decades and is projected to continue warming in the future. However, t...
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ftdoajarticles:oai:doaj.org/article:fc7d5e0498da45cd97e77c1cb2a62507 2023-05-15T17:58:10+02:00 Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. Pengfei Han Xiaohui Lin Wen Zhang Guocheng Wang Yinan Wang 2019-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0215261 https://doaj.org/article/fc7d5e0498da45cd97e77c1cb2a62507 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0215261 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0215261 https://doaj.org/article/fc7d5e0498da45cd97e77c1cb2a62507 PLoS ONE, Vol 14, Iss 7, p e0215261 (2019) Medicine R Science Q article 2019 ftdoajarticles https://doi.org/10.1371/journal.pone.0215261 2022-12-31T10:36:11Z The Tibetan Plateau is an important component of the global carbon cycle due to the large permafrost carbon pool and its vulnerability to climate warming. The Tibetan Plateau has experienced a noticeable warming over the past few decades and is projected to continue warming in the future. However, the direction and magnitude of carbon fluxes responses to climate change and elevated CO2 concentration under Representative Concentration Pathways (RCP) scenarios in the Tibetan Plateau grassland are poorly known. Here, we used a calibrated and validated biogeochemistry model, CENTURY, to quantify the contributions of climate change and elevated CO2 on the future carbon budget in the alpine grassland under three RCP scenarios. Though the Tibetan Plateau grassland was projected a net carbon sink of 16 ~ 25 Tg C yr-1 in the 21st century, the capacity of carbon sequestration was predicted to decrease gradually because climate-driven increases in heterotrophic respiration (Rh) (with linear slopes 0.49 ~ 1.62 g C m-2 yr-1) was greater than the net primary production (NPP) (0.35 ~ 1.52 g C m-2 yr-1). However, the elevated CO2 contributed more to plant growth (1.9% ~ 7.3%) than decomposition (1.7% ~ 6.1%), which could offset the warming-induced carbon loss. The interannual and decadal-scale dynamics of the carbon fluxes in the alpine grassland were primarily controlled by temperature, while the role of precipitation became increasingly important in modulating carbon cycle. The strengthened correlation between precipitation and carbon budget suggested that further research should consider the performance of precipitation in evaluating carbon dynamics in a warmer climate scenario. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles PLOS ONE 14 7 e0215261 |
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Medicine R Science Q Pengfei Han Xiaohui Lin Wen Zhang Guocheng Wang Yinan Wang Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
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Medicine R Science Q |
description |
The Tibetan Plateau is an important component of the global carbon cycle due to the large permafrost carbon pool and its vulnerability to climate warming. The Tibetan Plateau has experienced a noticeable warming over the past few decades and is projected to continue warming in the future. However, the direction and magnitude of carbon fluxes responses to climate change and elevated CO2 concentration under Representative Concentration Pathways (RCP) scenarios in the Tibetan Plateau grassland are poorly known. Here, we used a calibrated and validated biogeochemistry model, CENTURY, to quantify the contributions of climate change and elevated CO2 on the future carbon budget in the alpine grassland under three RCP scenarios. Though the Tibetan Plateau grassland was projected a net carbon sink of 16 ~ 25 Tg C yr-1 in the 21st century, the capacity of carbon sequestration was predicted to decrease gradually because climate-driven increases in heterotrophic respiration (Rh) (with linear slopes 0.49 ~ 1.62 g C m-2 yr-1) was greater than the net primary production (NPP) (0.35 ~ 1.52 g C m-2 yr-1). However, the elevated CO2 contributed more to plant growth (1.9% ~ 7.3%) than decomposition (1.7% ~ 6.1%), which could offset the warming-induced carbon loss. The interannual and decadal-scale dynamics of the carbon fluxes in the alpine grassland were primarily controlled by temperature, while the role of precipitation became increasingly important in modulating carbon cycle. The strengthened correlation between precipitation and carbon budget suggested that further research should consider the performance of precipitation in evaluating carbon dynamics in a warmer climate scenario. |
format |
Article in Journal/Newspaper |
author |
Pengfei Han Xiaohui Lin Wen Zhang Guocheng Wang Yinan Wang |
author_facet |
Pengfei Han Xiaohui Lin Wen Zhang Guocheng Wang Yinan Wang |
author_sort |
Pengfei Han |
title |
Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
title_short |
Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
title_full |
Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
title_fullStr |
Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
title_full_unstemmed |
Projected changes of alpine grassland carbon dynamics in response to climate change and elevated CO2 concentrations under Representative Concentration Pathways (RCP) scenarios. |
title_sort |
projected changes of alpine grassland carbon dynamics in response to climate change and elevated co2 concentrations under representative concentration pathways (rcp) scenarios. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2019 |
url |
https://doi.org/10.1371/journal.pone.0215261 https://doaj.org/article/fc7d5e0498da45cd97e77c1cb2a62507 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
PLoS ONE, Vol 14, Iss 7, p e0215261 (2019) |
op_relation |
https://doi.org/10.1371/journal.pone.0215261 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0215261 https://doaj.org/article/fc7d5e0498da45cd97e77c1cb2a62507 |
op_doi |
https://doi.org/10.1371/journal.pone.0215261 |
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PLOS ONE |
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14 |
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e0215261 |
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