Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics
As the climate warms, the carbon balance of arctic ecosystems will respond in two opposing ways: Plants will grow faster, leading to a carbon sink, while thawing permafrost will lead to decomposition and loss of soil carbon. However, thawing permafrost also releases nitrogen that fertilizes plant gr...
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ftpubmed:oai:pubmedcentral.nih.gov:4378430 2023-05-15T15:01:20+02:00 Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics Koven, Charles D. Lawrence, David M. Riley, William J. 2015-03-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4378430 http://www.ncbi.nlm.nih.gov/pubmed/25775603 https://doi.org/10.1073/pnas.1415123112 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25775603 http://dx.doi.org/10.1073/pnas.1415123112 Freely available online through the PNAS open access option. Biological Sciences Text 2015 ftpubmed https://doi.org/10.1073/pnas.1415123112 2015-04-05T00:13:56Z As the climate warms, the carbon balance of arctic ecosystems will respond in two opposing ways: Plants will grow faster, leading to a carbon sink, while thawing permafrost will lead to decomposition and loss of soil carbon. However, thawing permafrost also releases nitrogen that fertilizes plant growth, offsetting some carbon losses. The balance of these processes determines whether these ecosystems will act as a stabilizing or destabilizing feedback to climate change. We show that this balance is determined by the rate at which permafrost carbon decomposes as it thaws, and that the stabilizing effects of nitrogen from permafrost is weaker than the destabilizing carbon losses from those soil layers. Text Arctic Climate change permafrost PubMed Central (PMC) Arctic Proceedings of the National Academy of Sciences 112 12 3752 3757 |
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English |
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Biological Sciences |
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Biological Sciences Koven, Charles D. Lawrence, David M. Riley, William J. Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
topic_facet |
Biological Sciences |
description |
As the climate warms, the carbon balance of arctic ecosystems will respond in two opposing ways: Plants will grow faster, leading to a carbon sink, while thawing permafrost will lead to decomposition and loss of soil carbon. However, thawing permafrost also releases nitrogen that fertilizes plant growth, offsetting some carbon losses. The balance of these processes determines whether these ecosystems will act as a stabilizing or destabilizing feedback to climate change. We show that this balance is determined by the rate at which permafrost carbon decomposes as it thaws, and that the stabilizing effects of nitrogen from permafrost is weaker than the destabilizing carbon losses from those soil layers. |
format |
Text |
author |
Koven, Charles D. Lawrence, David M. Riley, William J. |
author_facet |
Koven, Charles D. Lawrence, David M. Riley, William J. |
author_sort |
Koven, Charles D. |
title |
Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
title_short |
Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
title_full |
Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
title_fullStr |
Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
title_full_unstemmed |
Permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
title_sort |
permafrost carbon−climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics |
publisher |
National Academy of Sciences |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4378430 http://www.ncbi.nlm.nih.gov/pubmed/25775603 https://doi.org/10.1073/pnas.1415123112 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost |
genre_facet |
Arctic Climate change permafrost |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25775603 http://dx.doi.org/10.1073/pnas.1415123112 |
op_rights |
Freely available online through the PNAS open access option. |
op_doi |
https://doi.org/10.1073/pnas.1415123112 |
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Proceedings of the National Academy of Sciences |
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112 |
container_issue |
12 |
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3752 |
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3757 |
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1766333351262683136 |