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No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest

Julia Kelly Orcid Logo, Stefan Doerr Orcid Logo, Johan Ekroos Orcid Logo, Theresa S. Ibáñez Orcid Logo, Md. Rafikul Islam Orcid Logo, Cristina Santin Nuno, Margarida Soares Orcid Logo, Natascha Kljun Orcid Logo

Agricultural and Forest Meteorology, Volume: 364, Start page: 110454

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

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DOI (Published version): 10.1016/j.agrformet.2025.110454

Abstract

The long-term carbon storage capacity of the boreal forest is under threat from the increasing frequency and intensity of wildfires. In addition to the direct carbon emissions during a fire, the burnt forest often turns into a net carbon emitter after fire, leading to large additional losses of carb...

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Published in: Agricultural and Forest Meteorology
ISSN: 0168-1923
Published: Elsevier BV 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69500
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spelling 2025-06-12T16:05:03.4648236 v2 69500 2025-05-12 No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest 575eb5094f2328249328b3e43deb5088 0000-0002-8700-9002 Stefan Doerr Stefan Doerr true false 993c82cbaf875c1268156360e83c4dfd Cristina Santin Nuno Cristina Santin Nuno true false c96172d106206ba8c504317bb7887587 0000-0001-9650-2184 Natascha Kljun Natascha Kljun true false 2025-05-12 BGPS The long-term carbon storage capacity of the boreal forest is under threat from the increasing frequency and intensity of wildfires. In addition to the direct carbon emissions during a fire, the burnt forest often turns into a net carbon emitter after fire, leading to large additional losses of carbon over several years. Understanding how quickly forests recover after a fire is therefore vital to predicting the effects of fire on the forest carbon balance. We present soil respiration and CH4 fluxes, soil chemistry, microclimate and vegetation survey data from the first four years after a wildfire in a Pinus sylvestris forest in Sweden. This is an understudied part of the boreal biome where forest management decisions interact with disturbances to affect forest growth. We analysed how fire severity and post-fire salvage-logging affected soil carbon fluxes. The fire did not affect soil CH4 uptake. However, soil respiration was significantly affected by the presence or absence of living trees after the fire and post-fire forest management. Tree mortality due to the high-severity fire, or the salvage-logging of living trees after low-severity fire, led to immediate and significant decreases in soil respiration. Salvage-logging of dead trees after high-severity fire did not alter soil respiration compared to when the dead trees were left standing. However, it did significantly slow the regrowth of understory vegetation. Our results highlight that the impact of salvage-logging on the soil carbon fluxes depends on fire severity but that logging always slows the natural recovery of vegetation after fire. The soil CO2 fluxes did not show signs of recovery at any of the burnt sites during the first four years since the fire. Journal Article Agricultural and Forest Meteorology 364 110454 Elsevier BV 0168-1923 Soil respiration; Wildfire; Recovery; Salvage-logging; Boreal forest; Methane flux 1 4 2025 2025-04-01 10.1016/j.agrformet.2025.110454 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University This research was funded by the Swedish Research Council FORMAS grant 2018–02700 Swedish Research Council FORMAS grant 2019–00836, Crafoord foundation grant 20190763 Skogssällskapet Stina Werner Fond grant 2021–094, Royal Physiographic Society of Lund and the Swedish government through the Strategic Research Area BECC (Biodiversity and Ecosystem Services in a Changing Climate). 2025-06-12T16:05:03.4648236 2025-05-12T17:20:46.5347946 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Julia Kelly 0000-0002-7370-1401 1 Stefan Doerr 0000-0002-8700-9002 2 Johan Ekroos 0000-0003-1164-5472 3 Theresa S. Ibáñez 0000-0003-2459-5945 4 Md. Rafikul Islam 0000-0001-9501-7427 5 Cristina Santin Nuno 6 Margarida Soares 0009-0000-0355-1607 7 Natascha Kljun 0000-0001-9650-2184 8 69500__34261__8e3ea109d77e4cbe8362d50cf532c907.pdf 69500.pdf 2025-05-12T17:23:53.8478055 Output 12050746 application/pdf Version of Record true © 2025 The Author(s). This is an open access article under the CC BY license. true eng http://creativecommons.org/licenses/by/4.0/
title No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
spellingShingle No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
Stefan Doerr
Cristina Santin Nuno
Natascha Kljun
title_short No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
title_full No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
title_fullStr No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
title_full_unstemmed No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
title_sort No recovery of soil respiration four years after fire and post-fire management in a Nordic boreal forest
author_id_str_mv 575eb5094f2328249328b3e43deb5088
993c82cbaf875c1268156360e83c4dfd
c96172d106206ba8c504317bb7887587
author_id_fullname_str_mv 575eb5094f2328249328b3e43deb5088_***_Stefan Doerr
993c82cbaf875c1268156360e83c4dfd_***_Cristina Santin Nuno
c96172d106206ba8c504317bb7887587_***_Natascha Kljun
author Stefan Doerr
Cristina Santin Nuno
Natascha Kljun
author2 Julia Kelly
Stefan Doerr
Johan Ekroos
Theresa S. Ibáñez
Md. Rafikul Islam
Cristina Santin Nuno
Margarida Soares
Natascha Kljun
format Journal article
container_title Agricultural and Forest Meteorology
container_volume 364
container_start_page 110454
publishDate 2025
institution Swansea University
issn 0168-1923
doi_str_mv 10.1016/j.agrformet.2025.110454
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
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
active_str 0
description The long-term carbon storage capacity of the boreal forest is under threat from the increasing frequency and intensity of wildfires. In addition to the direct carbon emissions during a fire, the burnt forest often turns into a net carbon emitter after fire, leading to large additional losses of carbon over several years. Understanding how quickly forests recover after a fire is therefore vital to predicting the effects of fire on the forest carbon balance. We present soil respiration and CH4 fluxes, soil chemistry, microclimate and vegetation survey data from the first four years after a wildfire in a Pinus sylvestris forest in Sweden. This is an understudied part of the boreal biome where forest management decisions interact with disturbances to affect forest growth. We analysed how fire severity and post-fire salvage-logging affected soil carbon fluxes. The fire did not affect soil CH4 uptake. However, soil respiration was significantly affected by the presence or absence of living trees after the fire and post-fire forest management. Tree mortality due to the high-severity fire, or the salvage-logging of living trees after low-severity fire, led to immediate and significant decreases in soil respiration. Salvage-logging of dead trees after high-severity fire did not alter soil respiration compared to when the dead trees were left standing. However, it did significantly slow the regrowth of understory vegetation. Our results highlight that the impact of salvage-logging on the soil carbon fluxes depends on fire severity but that logging always slows the natural recovery of vegetation after fire. The soil CO2 fluxes did not show signs of recovery at any of the burnt sites during the first four years since the fire.
published_date 2025-04-01T05:28:21Z
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score 11.444327

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