Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil
International audience Abstract. Global warming may lead to carbon transfers from soils to the atmosphere, yet this positive feedback to the climate system remains highly uncertain, especially in subsoils (Ilyina and Friedlingstein, 2016; Shi et al., 2018). Using natural geothermal soil warming grad...
Published in: | Biogeosciences |
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Language: | English |
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HAL CCSD
2022
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Online Access: | https://hal.archives-ouvertes.fr/hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676/document https://hal.archives-ouvertes.fr/hal-03796676/file/bg-19-3381-2022.pdf https://doi.org/10.5194/bg-19-3381-2022 |
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ftceafr:oai:HAL:hal-03796676v1 2023-05-15T18:28:14+02:00 Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil Verbrigghe, Niel Leblans, Niki Sigurdsson, Bjarni Vicca, Sara Fang, Chao Fuchslueger, Lucia Soong, Jennifer Weedon, James Poeplau, Christopher Ariza-Carricondo, Cristina Bahn, Michael Guenet, Bertrand Gundersen, Per Gunnarsdóttir, Gunnhildur Kätterer, Thomas Liu, Zhanfeng Maljanen, Marja Marañón-Jiménez, Sara Meeran, Kathiravan Oddsdóttir, Edda Ostonen, Ivika Peñuelas, Josep Richter, Andreas Sardans, Jordi Sigurðsson, Páll Torn, Margaret van Bodegom, Peter Verbruggen, Erik Walker, Tom Wallander, Håkan Janssens, Ivan Laboratoire de géologie de l'ENS (LGENS) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2022 https://hal.archives-ouvertes.fr/hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676/document https://hal.archives-ouvertes.fr/hal-03796676/file/bg-19-3381-2022.pdf https://doi.org/10.5194/bg-19-3381-2022 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-19-3381-2022 hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676/document https://hal.archives-ouvertes.fr/hal-03796676/file/bg-19-3381-2022.pdf doi:10.5194/bg-19-3381-2022 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.archives-ouvertes.fr/hal-03796676 Biogeosciences, European Geosciences Union, 2022, 19 (14), pp.3381-3393. ⟨10.5194/bg-19-3381-2022⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftceafr https://doi.org/10.5194/bg-19-3381-2022 2022-10-19T16:26:33Z International audience Abstract. Global warming may lead to carbon transfers from soils to the atmosphere, yet this positive feedback to the climate system remains highly uncertain, especially in subsoils (Ilyina and Friedlingstein, 2016; Shi et al., 2018). Using natural geothermal soil warming gradients of up to +6.4 ∘C in subarctic grasslands (Sigurdsson et al., 2016), we show that soil organic carbon (SOC) stocks decline strongly and linearly with warming (−2.8 t ha−1 ∘C−1). Comparison of SOC stock changes following medium-term (5 and 10 years) and long-term (>50 years) warming revealed that all SOC stock reduction occurred within the first 5 years of warming, after which continued warming no longer reduced SOC stocks. This rapid equilibration of SOC observed in Andosol suggests a critical role for ecosystem adaptations to warming and could imply short-lived soil carbon–climate feedbacks. Our data further revealed that the soil C loss occurred in all aggregate size fractions and that SOC stock reduction was only visible in topsoil (0–10 cm). SOC stocks in subsoil (10–30 cm), where plant roots were absent, showed apparent conservation after >50 years of warming. The observed depth-dependent warming responses indicate that explicit vertical resolution is a prerequisite for global models to accurately project future SOC stocks for this soil type and should be investigated for soils with other mineralogies. Article in Journal/Newspaper Subarctic HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Biogeosciences 19 14 3381 3393 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Verbrigghe, Niel Leblans, Niki Sigurdsson, Bjarni Vicca, Sara Fang, Chao Fuchslueger, Lucia Soong, Jennifer Weedon, James Poeplau, Christopher Ariza-Carricondo, Cristina Bahn, Michael Guenet, Bertrand Gundersen, Per Gunnarsdóttir, Gunnhildur Kätterer, Thomas Liu, Zhanfeng Maljanen, Marja Marañón-Jiménez, Sara Meeran, Kathiravan Oddsdóttir, Edda Ostonen, Ivika Peñuelas, Josep Richter, Andreas Sardans, Jordi Sigurðsson, Páll Torn, Margaret van Bodegom, Peter Verbruggen, Erik Walker, Tom Wallander, Håkan Janssens, Ivan Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Abstract. Global warming may lead to carbon transfers from soils to the atmosphere, yet this positive feedback to the climate system remains highly uncertain, especially in subsoils (Ilyina and Friedlingstein, 2016; Shi et al., 2018). Using natural geothermal soil warming gradients of up to +6.4 ∘C in subarctic grasslands (Sigurdsson et al., 2016), we show that soil organic carbon (SOC) stocks decline strongly and linearly with warming (−2.8 t ha−1 ∘C−1). Comparison of SOC stock changes following medium-term (5 and 10 years) and long-term (>50 years) warming revealed that all SOC stock reduction occurred within the first 5 years of warming, after which continued warming no longer reduced SOC stocks. This rapid equilibration of SOC observed in Andosol suggests a critical role for ecosystem adaptations to warming and could imply short-lived soil carbon–climate feedbacks. Our data further revealed that the soil C loss occurred in all aggregate size fractions and that SOC stock reduction was only visible in topsoil (0–10 cm). SOC stocks in subsoil (10–30 cm), where plant roots were absent, showed apparent conservation after >50 years of warming. The observed depth-dependent warming responses indicate that explicit vertical resolution is a prerequisite for global models to accurately project future SOC stocks for this soil type and should be investigated for soils with other mineralogies. |
author2 |
Laboratoire de géologie de l'ENS (LGENS) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Verbrigghe, Niel Leblans, Niki Sigurdsson, Bjarni Vicca, Sara Fang, Chao Fuchslueger, Lucia Soong, Jennifer Weedon, James Poeplau, Christopher Ariza-Carricondo, Cristina Bahn, Michael Guenet, Bertrand Gundersen, Per Gunnarsdóttir, Gunnhildur Kätterer, Thomas Liu, Zhanfeng Maljanen, Marja Marañón-Jiménez, Sara Meeran, Kathiravan Oddsdóttir, Edda Ostonen, Ivika Peñuelas, Josep Richter, Andreas Sardans, Jordi Sigurðsson, Páll Torn, Margaret van Bodegom, Peter Verbruggen, Erik Walker, Tom Wallander, Håkan Janssens, Ivan |
author_facet |
Verbrigghe, Niel Leblans, Niki Sigurdsson, Bjarni Vicca, Sara Fang, Chao Fuchslueger, Lucia Soong, Jennifer Weedon, James Poeplau, Christopher Ariza-Carricondo, Cristina Bahn, Michael Guenet, Bertrand Gundersen, Per Gunnarsdóttir, Gunnhildur Kätterer, Thomas Liu, Zhanfeng Maljanen, Marja Marañón-Jiménez, Sara Meeran, Kathiravan Oddsdóttir, Edda Ostonen, Ivika Peñuelas, Josep Richter, Andreas Sardans, Jordi Sigurðsson, Páll Torn, Margaret van Bodegom, Peter Verbruggen, Erik Walker, Tom Wallander, Håkan Janssens, Ivan |
author_sort |
Verbrigghe, Niel |
title |
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
title_short |
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
title_full |
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
title_fullStr |
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
title_full_unstemmed |
Soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
title_sort |
soil carbon loss in warmed subarctic grasslands is rapid and restricted to topsoil |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.archives-ouvertes.fr/hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676/document https://hal.archives-ouvertes.fr/hal-03796676/file/bg-19-3381-2022.pdf https://doi.org/10.5194/bg-19-3381-2022 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.archives-ouvertes.fr/hal-03796676 Biogeosciences, European Geosciences Union, 2022, 19 (14), pp.3381-3393. ⟨10.5194/bg-19-3381-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-19-3381-2022 hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676 https://hal.archives-ouvertes.fr/hal-03796676/document https://hal.archives-ouvertes.fr/hal-03796676/file/bg-19-3381-2022.pdf doi:10.5194/bg-19-3381-2022 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-19-3381-2022 |
container_title |
Biogeosciences |
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19 |
container_issue |
14 |
container_start_page |
3381 |
op_container_end_page |
3393 |
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