Large diurnal compensatory effects mitigate the response of Amazonian forests to atmospheric warming and drying
Zhang, Zhaoying (Nanjing University. School of Geography and Ocean Science)
Cescatti, Alessandro (European Commission. Joint Research Centre)
Wang, Ying-Ping (Commonwealth Scientific and Industrial Research Organization)
Gentine, Pierre (Columbia University. Department of Earth and Environmental Engineering)
Xiao, Jingfeng (University of New Hampshire. Institute for the Study of Earth, Oceans, and Space)
Guanter, Luis (Polytechnic University of Valencia. Department of Applied Physics)
Huete, Alfredo R. (University of Technology Sydney. School of Life Sciences)
Wu, Jin (The Chinese University of Hong Kong. State Key Laboratory of Agrobiotechnology)
Chen, Jing M. (University of Toronto. Department of Geography and Planning)
Ju, Weimin (Nanjing University. Jiangsu Provincial Key Laboratory of Geographic)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zhang, Yongguang (Nanjing University. International Joint Carbon Neutrality Laboratory)

Data:	2023
Resum:	Photosynthesis and evapotranspiration in Amazonian forests are major contributors to the global carbon and water cycles. However, their diurnal patterns and responses to atmospheric warming and drying at regional scale remain unclear, hindering the understanding of global carbon and water cycles. Here, we used proxies of photosynthesis and evapotranspiration from the International Space Station to reveal a strong depression of dry season afternoon photosynthesis (by 6. 7 ± 2. 4%) and evapotranspiration (by 6. 1 ± 3. 1%). Photosynthesis positively responds to vapor pressure deficit (VPD) in the morning, but negatively in the afternoon. Furthermore, we projected that the regionally depressed afternoon photosynthesis will be compensated by their increases in the morning in future dry seasons. These results shed new light on the complex interplay of climate with carbon and water fluxes in Amazonian forests and provide evidence on the emerging environmental constraints of primary productivity that may improve the robustness of future projections.
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, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Science advances, Vol. 9, Issue 21 (May 2023) , art. eabq497, ISSN 2375-2548

DOI: 10.1126/sciadv.abq4974
PMID: 37235657

14 p, 2.1 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
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