Impact of winter warming on CO 2 fluxes in evergreen needleleaf forests
Rattachement africain : de, in, ch, it, be, cz, se, us, fi. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Compared to drought and heat waves, the impact of winter warming on forest CO 2 fluxes has been less studied, despite its significant relevance in colder regions with higher soil carbon content. Our objective was to test the effect of the exceptionally warm winter of 2020 on the winter CO 2 budget of cold-adapted evergreen needleleaf forests across Europe and identify the contribution of climate factors to changes in winter CO 2 fluxes. Our hypothesis was that warming in winter leads to higher emissions across colder sites due to increased ecosystem respiration. To test this hypothesis, we used 98 site-year eddy covariance measurements across 14 evergreen needleleaf forests (ENFs) distributed from the north to the south of Europe (from Sweden to Italy). We used a data-driven approach to quantify the effect of radiation, air temperature, and soil temperature on changes in CO 2 fluxes during the warm winter of 2020. Our results showed that warming in winter decreased forest net ecosystem productivity (NEP) significantly across most sites. The contribution of climate variables to CO 2 fluxes varied across the sites: in southern regions with warmer mean temperatures, radiation had a greater influence on NEP. Conversely, at colder sites, air temperature played a more critical role in affecting NEP. During the warm winter of 2020, colder regions experienced larger air temperature anomalies compared to the other sites; however we did not observe a significantly larger increase at colder sites due to winter warming. The varying responses of NEP across different sites highlight the complex interactions between climate variables such as air temperature, soil temperature, and radiation. These findings underscore the importance of integrating winter warming effects to more accurately predict the impacts of climate change on forest carbon dynamics.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Impact of winter warming on CO <sub>2</sub> fluxes in evergreen needleleaf forests
- Date Crossref
- 12/03/2025
- Éditeur
- Copernicus GmbH
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Münster pays non établi dans la noticeUniversité ou école supérieure
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Indian Institute of Technology Kharagpur Agricultural and Food Engineering Department pays non établi dans la noticeUniversité ou école supérieure
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ETH Zurich pays non établi dans la noticeUniversité ou école supérieure
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Joint Research Centre European Commission pays non établi dans la noticeOrganisme public
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University of Antwerp Department of Biology pays non établi dans la noticeUniversité ou école supérieure
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Free University of Bozen-Bolzano pays non établi dans la noticeUniversité ou école supérieure
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Czech Academy of Sciences pays non établi dans la noticeStructure de recherche
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Swedish University of Agricultural Sciences Department of Forest Ecology and Management pays non établi dans la noticeUniversité ou école supérieure
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Sphere Institute pays non établi dans la noticeOrganisation à but non lucratif
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Institute for Technical and Scientific Hydrology (Germany) pays non établi dans la noticeEntreprise
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Finnish Meteorological Institute pays non établi dans la noticeOrganisme public
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Institute of Agricultural Sciences Department of Environmental Systems Science pays non établi dans la noticeStructure de recherche
University of Münster, Agricultural and Food Engineering Department — Indian Institute of Technology Kharagpur et ETH Zurich, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.