Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost
Boreal forests cover over half of the global permafrost area and protect underlying permafrost. Boreal forest development, therefore, has an impact on permafrost evolution, especially under a warming climate. Forest disturbances and changing climate conditions cause vegetation shifts and potentially...
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Online Access: | http://hdl.handle.net/10852/99943 https://doi.org/10.1029/2021JG006630 |
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ftoslouniv:oai:www.duo.uio.no:10852/99943 2023-05-15T17:55:22+02:00 Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost ENEngelskEnglishThermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz 2022-08-29T11:56:45Z http://hdl.handle.net/10852/99943 https://doi.org/10.1029/2021JG006630 EN eng Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz . Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost. Journal of Geophysical Research (JGR): Biogeosciences. 2022, 127(5), 1-24 http://hdl.handle.net/10852/99943 2046667 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Biogeosciences&rft.volume=127&rft.spage=1&rft.date=2022 Journal of Geophysical Research (JGR): Biogeosciences 127 5 https://doi.org/10.1029/2021JG006630 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2169-8953 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1029/2021JG006630 2023-02-15T23:36:40Z Boreal forests cover over half of the global permafrost area and protect underlying permafrost. Boreal forest development, therefore, has an impact on permafrost evolution, especially under a warming climate. Forest disturbances and changing climate conditions cause vegetation shifts and potentially destabilize the carbon stored within the vegetation and permafrost. Disturbed permafrost-forest ecosystems can develop into a dry or swampy bush- or grasslands, shift toward broadleaf- or evergreen needleleaf-dominated forests, or recover to the pre-disturbance state. An increase in the number and intensity of fires, as well as intensified logging activities, could lead to a partial or complete ecosystem and permafrost degradation. We study the impact of forest disturbances (logging, surface, and canopy fires) on the thermal and hydrological permafrost conditions and ecosystem resilience. We use a dynamic multilayer canopy-permafrost model to simulate different scenarios at a study site in eastern Siberia. We implement expected mortality, defoliation, and ground surface changes and analyze the interplay between forest recovery and permafrost. We find that forest loss induces soil drying of up to 44%, leading to lower active layer thicknesses and abrupt or steady decline of a larch forest, depending on disturbance intensity. Only after surface fires, the most common disturbances, inducing low mortality rates, forests can recover and overpass pre-disturbance leaf area index values. We find that the trajectory of larch forests after surface fires is dependent on the precipitation conditions in the years after the disturbance. Dryer years can drastically change the direction of the larch forest development within the studied period. Article in Journal/Newspaper permafrost Siberia Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Journal of Geophysical Research: Biogeosciences 127 5 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
Boreal forests cover over half of the global permafrost area and protect underlying permafrost. Boreal forest development, therefore, has an impact on permafrost evolution, especially under a warming climate. Forest disturbances and changing climate conditions cause vegetation shifts and potentially destabilize the carbon stored within the vegetation and permafrost. Disturbed permafrost-forest ecosystems can develop into a dry or swampy bush- or grasslands, shift toward broadleaf- or evergreen needleleaf-dominated forests, or recover to the pre-disturbance state. An increase in the number and intensity of fires, as well as intensified logging activities, could lead to a partial or complete ecosystem and permafrost degradation. We study the impact of forest disturbances (logging, surface, and canopy fires) on the thermal and hydrological permafrost conditions and ecosystem resilience. We use a dynamic multilayer canopy-permafrost model to simulate different scenarios at a study site in eastern Siberia. We implement expected mortality, defoliation, and ground surface changes and analyze the interplay between forest recovery and permafrost. We find that forest loss induces soil drying of up to 44%, leading to lower active layer thicknesses and abrupt or steady decline of a larch forest, depending on disturbance intensity. Only after surface fires, the most common disturbances, inducing low mortality rates, forests can recover and overpass pre-disturbance leaf area index values. We find that the trajectory of larch forests after surface fires is dependent on the precipitation conditions in the years after the disturbance. Dryer years can drastically change the direction of the larch forest development within the studied period. |
format |
Article in Journal/Newspaper |
author |
Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz |
spellingShingle |
Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
author_facet |
Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz |
author_sort |
Stuenzi, Simone Maria |
title |
Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
title_short |
Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
title_full |
Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
title_fullStr |
Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
title_full_unstemmed |
Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost |
title_sort |
thermohydrological impact of forest disturbances on ecosystem-protected permafrost |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/99943 https://doi.org/10.1029/2021JG006630 |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_source |
2169-8953 |
op_relation |
Stuenzi, Simone Maria Kruse, Stefan Boike, Julia Herzschuh, Ulrike Oehme, Alexander Pestryakova, Luidmila A. Westermann, Sebastian Langer, Moritz . Thermohydrological Impact of Forest Disturbances on Ecosystem-Protected Permafrost. Journal of Geophysical Research (JGR): Biogeosciences. 2022, 127(5), 1-24 http://hdl.handle.net/10852/99943 2046667 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research (JGR): Biogeosciences&rft.volume=127&rft.spage=1&rft.date=2022 Journal of Geophysical Research (JGR): Biogeosciences 127 5 https://doi.org/10.1029/2021JG006630 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021JG006630 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
127 |
container_issue |
5 |
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1766163292702638080 |