Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia
Abstract The currently observed climate warming will lead to widespread degradation of near‐surface permafrost, which may release substantial amounts of inorganic nitrogen (N) into arctic ecosystems. We studied 11 soil profiles at three different sites in arctic eastern Siberia to assess the amount...
Published in: | Permafrost and Periglacial Processes |
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Online Access: | http://dx.doi.org/10.1002/ppp.1958 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1958 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1958 |
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crwiley:10.1002/ppp.1958 2024-06-23T07:44:55+00:00 Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia Beermann, Fabian Langer, Moritz Wetterich, Sebastian Strauss, Jens Boike, Julia Fiencke, Claudia Schirrmeister, Lutz Pfeiffer, Eva‐Maria Kutzbach, Lars Seventh Framework Programme Deutsche Forschungsgemeinschaft Russian Foundation for Basic Research Helmholtz-Gemeinschaft Seventh Framework Programme Universität Hamburg Deutsche Forschungsgemeinschaft 2017 http://dx.doi.org/10.1002/ppp.1958 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1958 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1958 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 28, issue 4, page 605-618 ISSN 1045-6740 1099-1530 journal-article 2017 crwiley https://doi.org/10.1002/ppp.1958 2024-05-31T08:15:16Z Abstract The currently observed climate warming will lead to widespread degradation of near‐surface permafrost, which may release substantial amounts of inorganic nitrogen (N) into arctic ecosystems. We studied 11 soil profiles at three different sites in arctic eastern Siberia to assess the amount of inorganic N stored in arctic permafrost soils. We modelled the potential thickening of the active layer for these sites using the CryoGrid2 permafrost model and representative concentration pathways (RCPs) 4.5 (a stabilisation scenario) and 8.5 (a business as usual emission scenario, with increasing carbon emissions). The modelled increases in active‐layer thickness (ALT) were used to estimate potential annual liberation of inorganic N from permafrost soils during the course of climate change. We observed significant stores of inorganic ammonium in permafrost, up to 40‐fold higher than in the active layer. The modelled increase in ALT under the RCP8.5 scenario can result in substantial liberation of N, reaching values up to the order of magnitude of annual fixation of atmospheric N in arctic soils. However, the thaw‐induced liberation of N represents only a small flux in comparison with the overall ecosystem N cycling. Copyright © 2017 John Wiley & Sons, Ltd. Article in Journal/Newspaper Active layer thickness Arctic Climate change permafrost Permafrost and Periglacial Processes Siberia Wiley Online Library Arctic Permafrost and Periglacial Processes 28 4 605 618 |
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English |
description |
Abstract The currently observed climate warming will lead to widespread degradation of near‐surface permafrost, which may release substantial amounts of inorganic nitrogen (N) into arctic ecosystems. We studied 11 soil profiles at three different sites in arctic eastern Siberia to assess the amount of inorganic N stored in arctic permafrost soils. We modelled the potential thickening of the active layer for these sites using the CryoGrid2 permafrost model and representative concentration pathways (RCPs) 4.5 (a stabilisation scenario) and 8.5 (a business as usual emission scenario, with increasing carbon emissions). The modelled increases in active‐layer thickness (ALT) were used to estimate potential annual liberation of inorganic N from permafrost soils during the course of climate change. We observed significant stores of inorganic ammonium in permafrost, up to 40‐fold higher than in the active layer. The modelled increase in ALT under the RCP8.5 scenario can result in substantial liberation of N, reaching values up to the order of magnitude of annual fixation of atmospheric N in arctic soils. However, the thaw‐induced liberation of N represents only a small flux in comparison with the overall ecosystem N cycling. Copyright © 2017 John Wiley & Sons, Ltd. |
author2 |
Seventh Framework Programme Deutsche Forschungsgemeinschaft Russian Foundation for Basic Research Helmholtz-Gemeinschaft Seventh Framework Programme Universität Hamburg Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Beermann, Fabian Langer, Moritz Wetterich, Sebastian Strauss, Jens Boike, Julia Fiencke, Claudia Schirrmeister, Lutz Pfeiffer, Eva‐Maria Kutzbach, Lars |
spellingShingle |
Beermann, Fabian Langer, Moritz Wetterich, Sebastian Strauss, Jens Boike, Julia Fiencke, Claudia Schirrmeister, Lutz Pfeiffer, Eva‐Maria Kutzbach, Lars Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
author_facet |
Beermann, Fabian Langer, Moritz Wetterich, Sebastian Strauss, Jens Boike, Julia Fiencke, Claudia Schirrmeister, Lutz Pfeiffer, Eva‐Maria Kutzbach, Lars |
author_sort |
Beermann, Fabian |
title |
Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
title_short |
Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
title_full |
Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
title_fullStr |
Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
title_full_unstemmed |
Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia |
title_sort |
permafrost thaw and liberation of inorganic nitrogen in eastern siberia |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/ppp.1958 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1958 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1958 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Active layer thickness Arctic Climate change permafrost Permafrost and Periglacial Processes Siberia |
genre_facet |
Active layer thickness Arctic Climate change permafrost Permafrost and Periglacial Processes Siberia |
op_source |
Permafrost and Periglacial Processes volume 28, issue 4, page 605-618 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1958 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
28 |
container_issue |
4 |
container_start_page |
605 |
op_container_end_page |
618 |
_version_ |
1802640852119453696 |