Global warming accelerates soil heterotrophic respiration
Carbon efflux from soils is the largest terrestrial carbon source to the atmosphere, yet it is still one of the most uncertain fluxes in the Earth’s carbon budget. A dominant component of this flux is heterotrophic respiration, influenced by several environmental factors, most notably soil temperatu...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/620447 2024-02-11T10:01:18+01:00 Global warming accelerates soil heterotrophic respiration Nissan, Alon Alcolombri, Uria Peleg, Nadav Galili, Nir id_orcid:0 000-0001-5780-0592 Jimenez-Martinez, Joaquin id_orcid:0 000-0002-2063-6490 Molnar, Peter id_orcid:0 000-0001-6437-4931 Holzner, Markus 2023-06-10 application/application/pdf https://hdl.handle.net/20.500.11850/620447 https://doi.org/10.3929/ethz-b-000620447 en eng Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-38981-w info:eu-repo/semantics/altIdentifier/wos/001003866300002 http://hdl.handle.net/20.500.11850/620447 doi:10.3929/ethz-b-000620447 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International Nature Communications, 14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftethz https://doi.org/20.500.11850/62044710.3929/ethz-b-00062044710.1038/s41467-023-38981-w 2024-01-15T00:51:16Z Carbon efflux from soils is the largest terrestrial carbon source to the atmosphere, yet it is still one of the most uncertain fluxes in the Earth’s carbon budget. A dominant component of this flux is heterotrophic respiration, influenced by several environmental factors, most notably soil temperature and moisture. Here, we develop a mechanistic model from micro to global scale to explore how changes in soil water content and temperature affect soil heterotrophic respiration. Simulations, laboratory measurements, and field observations validate the new approach. Estimates from the model show that heterotrophic respiration has been increasing since the 1980s at a rate of about 2% per decade globally. Using future projections of surface temperature and soil moisture, the model predicts a global increase of about 40% in heterotrophic respiration by the end of the century under the worst-case emission scenario, where the Arctic region is expected to experience a more than two-fold increase, driven primarily by declining soil moisture rather than temperature increase. ISSN:2041-1723 Article in Journal/Newspaper Arctic Global warming ETH Zürich Research Collection Arctic |
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ETH Zürich Research Collection |
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English |
description |
Carbon efflux from soils is the largest terrestrial carbon source to the atmosphere, yet it is still one of the most uncertain fluxes in the Earth’s carbon budget. A dominant component of this flux is heterotrophic respiration, influenced by several environmental factors, most notably soil temperature and moisture. Here, we develop a mechanistic model from micro to global scale to explore how changes in soil water content and temperature affect soil heterotrophic respiration. Simulations, laboratory measurements, and field observations validate the new approach. Estimates from the model show that heterotrophic respiration has been increasing since the 1980s at a rate of about 2% per decade globally. Using future projections of surface temperature and soil moisture, the model predicts a global increase of about 40% in heterotrophic respiration by the end of the century under the worst-case emission scenario, where the Arctic region is expected to experience a more than two-fold increase, driven primarily by declining soil moisture rather than temperature increase. ISSN:2041-1723 |
format |
Article in Journal/Newspaper |
author |
Nissan, Alon Alcolombri, Uria Peleg, Nadav Galili, Nir id_orcid:0 000-0001-5780-0592 Jimenez-Martinez, Joaquin id_orcid:0 000-0002-2063-6490 Molnar, Peter id_orcid:0 000-0001-6437-4931 Holzner, Markus |
spellingShingle |
Nissan, Alon Alcolombri, Uria Peleg, Nadav Galili, Nir id_orcid:0 000-0001-5780-0592 Jimenez-Martinez, Joaquin id_orcid:0 000-0002-2063-6490 Molnar, Peter id_orcid:0 000-0001-6437-4931 Holzner, Markus Global warming accelerates soil heterotrophic respiration |
author_facet |
Nissan, Alon Alcolombri, Uria Peleg, Nadav Galili, Nir id_orcid:0 000-0001-5780-0592 Jimenez-Martinez, Joaquin id_orcid:0 000-0002-2063-6490 Molnar, Peter id_orcid:0 000-0001-6437-4931 Holzner, Markus |
author_sort |
Nissan, Alon |
title |
Global warming accelerates soil heterotrophic respiration |
title_short |
Global warming accelerates soil heterotrophic respiration |
title_full |
Global warming accelerates soil heterotrophic respiration |
title_fullStr |
Global warming accelerates soil heterotrophic respiration |
title_full_unstemmed |
Global warming accelerates soil heterotrophic respiration |
title_sort |
global warming accelerates soil heterotrophic respiration |
publisher |
Nature |
publishDate |
2023 |
url |
https://hdl.handle.net/20.500.11850/620447 https://doi.org/10.3929/ethz-b-000620447 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_source |
Nature Communications, 14 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-38981-w info:eu-repo/semantics/altIdentifier/wos/001003866300002 http://hdl.handle.net/20.500.11850/620447 doi:10.3929/ethz-b-000620447 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/62044710.3929/ethz-b-00062044710.1038/s41467-023-38981-w |
_version_ |
1790597097348661248 |