Partial asynchrony of coniferous forest carbon sources and sinks at the intra-annual time scale
Silvestro, Roberto (Université du Québec à Chicoutimi)
Mencuccini, Maurizio (Centre de Recerca Ecològica i d'Aplicacions Forestals)
García-Valdés, Raúl (Global Change Research Institute)
Antonucci, Serena (Università degli Studi del Molise)
Arzac, Alberto (Siberian Federal University)
Biondi, Franco (University of Nevada)
Buttò, Valentina (Université du Québec en Abitibi-Témiscamingue.)
Camarero, Jesús Julio (Instituto Pirenaico de Ecología)
Campelo, Filipe (University of Coimbra)
Cochard, Hervé (Université Clermont Auvergne)
Čufar, Katarina (Univerza V Ljubljani)
Cuny, Henri E. (Institut National de l'Information Géographique et Forestière)
de Luis, Martin (University of Zaragoza)
Deslauriers, Annie (Université du Québec à Chicoutimi.)
Drolet, Guillaume (Ministère des Ressources Naturelles et des Forêts du Québec)
Fonti, Marina V. (Swiss Federal Institute for Forest)
Fonti, Patrick (Swiss Federal Institute for Forest)
Giovannelli, Alessio (Consiglio Nazionale delle Ricerche.)
Gričar, Jožica (Slovenian Forestry Institute)
Gruber, Andreas (Leopold-Franzens University of Innsbruck)
Gryc, Vladimír (Mendel University in Brno)
Guerrieri, Rossella (University of Bologna)
Güney, Aylin (Izmir Katip Çelebi University)
Guo, Xiali (Guangxi University)
Huang, Jian-Guo (Zhejiang University)
Jyske, Tuula (University of Helsinki)
Kašpar, Jakub (The Silva Tarouca Research Institute for Landscape and Ornamental Gardening)
Kirdyanov, Alexander V. (University of Cambridge)
Klein, Tamir (Weizmann Institute of Science)
Lemay, Audrey (Université du Québec à Chicoutimi)
Li, Xiaoxia (Institute of Tibetan Plateau Research)
Liang, Eryuan (Institute of Tibetan Plateau Research)
Lintunen, Anna (University of Helsinki)
Liu, Feng (South China National Botanical Garden)
Lombardi, Fabio (Università Mediterranea di Reggio Calabria)
Ma, Qianqian (South China Botanical Garden)
Mäkinen, Harri (Natural Resources Institute Finland)
Malik, Rayees A. (University of Kashmir)
Martinez del Castillo, Edurne (Johannes Gutenberg University Mainz)
Martínez Vilalta, Jordi 1975- (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Mayr, Stefan (Leopold-Franzens University of Innsbruck)
Morin, Hubert (Université du Québec à Chicoutimi)
Nabais, Cristina (University of Coimbra)
Nöjd, Pekka (Natural Resources Institute Finland)
Oberhuber, Walter (Leopold-Franzens University of Innsbruck)
Olano, José M. (Universidad de Valladolid)
Ouimette, Andrew P. (University of New Hampshire)
Paljakka, Teemu (University of Helsinki)
Peltoniemi, Mikko (National Resources Institute (Luke))
Peters, Richard L. (University of Basel)
Ren, Ping (Anhui Normal University)
Prislan, Peter (Slovenian Forestry Institute)
Rathgeber, Cyrille B. K. (Université de Lorraine)
Sala, Anna (University of Montana)
Saracino, Antonio (University of Naples Federico II)
Saulino, Luigi (University of Naples Federico II)
Schiestl-Aalto, Piia (University of Helsinki)
Shishov, Vladimir V. (Siberian Federal University)
Stokes, Alexia (University of Montpellier)
Sukumar, Raman (Indian Institute of Science (IISc))
Sylvain, Jean-Daniel (Ministère des Ressources Naturelles et des Forêts du Québec)
Tognetti, Roberto (Free University of Bozen-Bolzano)
Treml, Václav (Charles University)
Urban, Josef (Mendel University in Brno.)
Vavrčík, Hanuš (Mendel University in Brno)
Vieira, Joana (CoLAB ForestWISE - Collaborative Laboratory for Integrated Forest & Fire Management)
von Arx, Georg (University of Bern)
Wang, Yan (University of Montpellier)
Yang, Bao (Nanjing University)
Zeng, Qiao (Guangzhou Institute of Geography, Guangdong Academy of Sciences)
Zhang, Shaokang (South China Botanical Garden)
Ziaco, Emanuele (Johannes Gutenberg University Mainz)
Rossi, Sergio (Université du Québec à Chicoutimi)

Data:	2024
Resum:	As major terrestrial carbon sinks, forests play an important role in mitigating climate change. The relationship between the seasonal uptake of carbon and its allocation to woody biomass remains poorly understood, leaving a significant gap in our capacity to predict carbon sequestration by forests. Here, we compare the intra-annual dynamics of carbon fluxes and wood formation across the Northern hemisphere, from carbon assimilation and the formation of non-structural carbon compounds to their incorporation in woody tissues. We show temporally coupled seasonal peaks of carbon assimilation (GPP) and wood cell differentiation, while the two processes are substantially decoupled during off-peak periods. Peaks of cambial activity occur substantially earlier compared to GPP, suggesting the buffer role of non-structural carbohydrates between the processes of carbon assimilation and allocation to wood. Our findings suggest that high-resolution seasonal data of ecosystem carbon fluxes, wood formation and the associated physiological processes may reduce uncertainties in carbon source-sink relationships at different spatial scales, from stand to ecosystem levels. Forest carbon source and sink processes may have contrasting climatic sensitivities. This analysis on 177 coniferous forest sites shows that carbon fluxes and wood formation are coupled but not fully synchronous at intra-annual scales, with peaks in cambial activity preceding those in photosynthesis and respiration.
Ajuts:	European Commission 952314
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Forest ecology ; Ecophysiology
Publicat a:	Nature communications, Vol. 15 (August 2024) , art. 6169, ISSN 2041-1723

DOI: 10.1038/s41467-024-49494-5
PMID: 39103349

12 p, 2.6 MB

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