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Into the unknown: The role of post‐fire soil erosion in the carbon cycle

Antonio Girona‐García Orcid Logo, Diana Vieira Orcid Logo, Stefan Doerr Orcid Logo, Panos Panagos Orcid Logo, Cristina Santin Nuno

Global Change Biology, Volume: 30, Issue: 6

Swansea University Authors: Stefan Doerr Orcid Logo, Cristina Santin Nuno

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DOI (Published version): 10.1111/gcb.17354

Abstract

Wildfires directly emit 2.1 Pg carbon (C) to the atmosphere annually. The net effect of wildfires on the C cycle, however, involves many interacting source and sink processes beyond these emissions from combustion. Among those, the role of post-fire enhanced soil organic carbon (SOC) erosion as a C...

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Published in: Global Change Biology
ISSN: 1354-1013 1365-2486
Published: Wiley 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa66706
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The net effect of wildfires on the C cycle, however, involves many interacting source and sink processes beyond these emissions from combustion. Among those, the role of post-fire enhanced soil organic carbon (SOC) erosion as a C sink mechanism remains essentially unquantified. Wildfires can greatly enhance soil erosion due to the loss of protective vegetation cover and changes to soil structure and wettability. Post-fire SOC erosion acts as a C sink when off-site burial and stabilization of C eroded after a fire, together with the on-site recovery of SOC content, exceed the C losses during its post-fire transport. Here we synthesize published data on post-fire SOC erosion and evaluate its overall potential to act as longer-term C sink. To explore its quantitative importance, we also model its magnitude at continental scale using the 2017 wildfire season in Europe. Our estimations show that the C sink ability of SOC water erosion during the first post-fire year could account for around 13% of the C emissions produced by wildland fires. 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spelling v2 66706 2024-06-12 Into the unknown: The role of post‐fire soil erosion in the carbon cycle 575eb5094f2328249328b3e43deb5088 0000-0002-8700-9002 Stefan Doerr Stefan Doerr true false 993c82cbaf875c1268156360e83c4dfd Cristina Santin Nuno Cristina Santin Nuno true false 2024-06-12 BGPS Wildfires directly emit 2.1 Pg carbon (C) to the atmosphere annually. The net effect of wildfires on the C cycle, however, involves many interacting source and sink processes beyond these emissions from combustion. Among those, the role of post-fire enhanced soil organic carbon (SOC) erosion as a C sink mechanism remains essentially unquantified. Wildfires can greatly enhance soil erosion due to the loss of protective vegetation cover and changes to soil structure and wettability. Post-fire SOC erosion acts as a C sink when off-site burial and stabilization of C eroded after a fire, together with the on-site recovery of SOC content, exceed the C losses during its post-fire transport. Here we synthesize published data on post-fire SOC erosion and evaluate its overall potential to act as longer-term C sink. To explore its quantitative importance, we also model its magnitude at continental scale using the 2017 wildfire season in Europe. Our estimations show that the C sink ability of SOC water erosion during the first post-fire year could account for around 13% of the C emissions produced by wildland fires. This indicates that post-fire SOC erosion is a quantitatively important process in the overall C balance of fires and highlights the need for more field data to further validate this initial assessment. Journal Article Global Change Biology 30 6 Wiley 1354-1013 1365-2486 carbon sequestration, prescribed fires, pyrogenic carbon, soil organic carbon, wildfires 1 6 2024 2024-06-01 10.1111/gcb.17354 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Another institution paid the OA fee Ministerio de Ciencia, Innovación,y Universidades/Agencia Estatal deInvestigación, Grant/Award Number:RYC2021-031262-I; Consejo Superior deInvestigaciones Científicas (CSIC), Grant/Award Number: 20208AT007; EuropeanUnion, through NextGenerationEU/PRTRfunds; Grant/Award Number: RYC2021-031262-I; Natural Environment ResearchCouncil, Grant/Award Number: UK-FDRS(NE/T003553/1); Horizon 2020 FrameworkProgramme, Grant/Award Number:101003890 2024-07-04T12:23:46.2558285 2024-06-12T08:01:27.0503597 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Antonio Girona‐García 0000-0001-7003-8950 1 Diana Vieira 0000-0003-2213-3798 2 Stefan Doerr 0000-0002-8700-9002 3 Panos Panagos 0000-0003-1484-2738 4 Cristina Santin Nuno 5 66706__30606__428dcdd17efe402b84fc3c4b8993522b.pdf 2024_Girona_PyC_erosion_GBC.pdf 2024-06-12T08:05:12.5278180 Output 2721755 application/pdf Version of Record true © 2024 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License. true eng http://creativecommons.org/licenses/by/4.0/
title Into the unknown: The role of post‐fire soil erosion in the carbon cycle
spellingShingle Into the unknown: The role of post‐fire soil erosion in the carbon cycle
Stefan Doerr
Cristina Santin Nuno
title_short Into the unknown: The role of post‐fire soil erosion in the carbon cycle
title_full Into the unknown: The role of post‐fire soil erosion in the carbon cycle
title_fullStr Into the unknown: The role of post‐fire soil erosion in the carbon cycle
title_full_unstemmed Into the unknown: The role of post‐fire soil erosion in the carbon cycle
title_sort Into the unknown: The role of post‐fire soil erosion in the carbon cycle
author_id_str_mv 575eb5094f2328249328b3e43deb5088
993c82cbaf875c1268156360e83c4dfd
author_id_fullname_str_mv 575eb5094f2328249328b3e43deb5088_***_Stefan Doerr
993c82cbaf875c1268156360e83c4dfd_***_Cristina Santin Nuno
author Stefan Doerr
Cristina Santin Nuno
author2 Antonio Girona‐García
Diana Vieira
Stefan Doerr
Panos Panagos
Cristina Santin Nuno
format Journal article
container_title Global Change Biology
container_volume 30
container_issue 6
publishDate 2024
institution Swansea University
issn 1354-1013
1365-2486
doi_str_mv 10.1111/gcb.17354
publisher Wiley
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
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description Wildfires directly emit 2.1 Pg carbon (C) to the atmosphere annually. The net effect of wildfires on the C cycle, however, involves many interacting source and sink processes beyond these emissions from combustion. Among those, the role of post-fire enhanced soil organic carbon (SOC) erosion as a C sink mechanism remains essentially unquantified. Wildfires can greatly enhance soil erosion due to the loss of protective vegetation cover and changes to soil structure and wettability. Post-fire SOC erosion acts as a C sink when off-site burial and stabilization of C eroded after a fire, together with the on-site recovery of SOC content, exceed the C losses during its post-fire transport. Here we synthesize published data on post-fire SOC erosion and evaluate its overall potential to act as longer-term C sink. To explore its quantitative importance, we also model its magnitude at continental scale using the 2017 wildfire season in Europe. Our estimations show that the C sink ability of SOC water erosion during the first post-fire year could account for around 13% of the C emissions produced by wildland fires. This indicates that post-fire SOC erosion is a quantitatively important process in the overall C balance of fires and highlights the need for more field data to further validate this initial assessment.
published_date 2024-06-01T12:23:45Z
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score 11.036378

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