Late spring frost delays tree spring phenology by reducing photosynthetic productivity
Wang, Jinmei (Sichuan University)
Hua, Hao (Chinese Academy of Sciences. Institute of Geographical Sciences and Natural Resources Research)
Guo, Jing (Sichuan University)
Huang, Xu (Sichuan University)
Zhang, Xin (Sichuan University)
Yang, Yuchuan (Sichuan University)
Wang, Danying (Sichuan University)
Guo, Xiali (Guangxi University)
Zhang, Rui (Zhejiang A&F University)
Smith, Nicholas G. (Texas Tech University. Department of Biological Sciences)
Rossi, Sergio (Université du Québec à Chicoutimi. Département des Sciences Fondamentales)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Ciais, Philippe (Centre National de la Recherche Scientifique. Université Paris-Saclay)
Wu, Chaoyang (Chinese Academy of Sciences. Institute of Geographical Sciences and Natural Resources Research)
Chen, Lei (Sichuan University)

Data:	2025
Resum:	Under climate warming, earlier spring phenology has heightened the risk of late spring frost (LSF) damage. However, the intricate interplay among LSF, spring phenology and photosynthetic carbon uptake remains poorly understood. Using 286,000 ground phenological records involving 870 tree species and remote-sensing data across the Northern Hemisphere, we show that LSF occurrence in a given year reduces photosynthetic productivity by 13. 6%, resulting in a delay in spring phenology by ~7. 0 days in the subsequent year. Our experimental evidence, along with simulations using modified process-based phenology models, further supports this finding. This frost-induced delay in spring phenology subsequently leads to a decrease in photosynthetic productivity during the next year following an LSF event. Therefore, it is essential to integrate this frost-induced delay in spring phenology into current Earth system models to ensure accurate predictions of the impacts of climate extremes on terrestrial carbon cycling under future climate change.
Ajuts:	Agencia Estatal de Investigación TED2021-132627B-I00 Agencia Estatal de Investigación PID2022-140808NB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-1333
Nota:	Altres ajuts: the Fundación Ramón Areces Grant CIVP20A6621
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Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Publicat a:	Nature climate change, Vol. 15 (January 2025) , p. 201-209, ISSN 1758-6798

DOI: 10.1038/s41558-024-02205-w

Preprint 37 p, 9.0 MB

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