Recent global decline of CO2 fertilization effects on vegetation photosynthesis
Wang, Songhan (Nanjing University. International Institute for Earth System Science)
Zhang, Yongguang (Nanjing University. International Institute for Earth System Science)
Ju, Weimin (Nanjing University. International Institute for Earth System Science)
Chen, Jing M. (Nanjing University. International Institute for Earth System Science)
Ciais, Philippe (Centre National de la Recherche Scientifique. Laboratoire des Sciences du Climat et de l'Environnement)
Cescatti, Alessandro (European Commission. Joint Research Centre)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Janssens, Ivan (University of Antwerp. Centre of Excellence PLECO)
Wu, Mousong (Nanjing University. International Institute for Earth System Science)
Berry, Joseph A. (Carnegie Institution for Science. Department of Global Ecology (USA))
Campbell, Elliott (University of California. Sierra Nevada Research Institute)
Fernández-Martínez, Marcos (University of Antwerp. Centre of Excellence PLECO)
Alkama, Ramdane (European Commission. Joint Research Centre)
Sitch, Stephen (University of Exeter. College of Life and Environmental Sciences)
Friedlingstein, Pierre (University of Exeter. College of Engineering, Mathematics and Physical Sciences)
Smith, William K. (University of Arizona. School of Natural Resources and the Environment)
Yuan, Wenping (Sun Yat-Sen University. Center for Monsoon and Environment Research)
He, Wei (Nanjing University. International Institute for Earth System Science)
Lombardozzi, Danica (National Center for Atmospheric Research (USA))
Kautz, Markus (Forest Research Institute Baden-Württemberg)
Zhu, Dan (Centre National de la Recherche Scientifique. Laboratoire des Sciences du Climat et de l'Environnement)
Lienert, Sebastian (University of Bern. Oeschger Centre for Climate Change Research)
Kato, Etsushi (Institute of Applied Energy (Japan))
Poulter, Benjamin (NASA Goddard Space Flight Center)
Sanders, Tanja G. M. (Thünen Institute of Forest Ecosystems)
Krüger, Inken (Thünen Institute of Forest Ecosystems)
Wang, Rong (Fudan University. Department of Environmental Science and Engineering)
Zeng, Ning (University of Maryland. Department of Atmospheric and Oceanic Science)
Tian, Hanqin (Auburn University. International Center for Climate and Global Change Research)
Vuichard, Nicolas (Centre National de la Recherche Scientifique. Laboratoire des Sciences du Climat et de l'Environnement)
Jain, Atul (University of Illinois. Department of Atmospheric Sciences)
Wiltshire, Andy (University of Exeter. College of Life and Environmental Sciences)
Haverd, Vanessa (CSIRO Oceans and Atmosphere (Australia))
Goll, Daniel (Centre National de la Recherche Scientifique. Laboratoire des Sciences du Climat et de l'Environnement)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Date:	2020
Abstract:	The enhanced vegetation productivity driven by increased concentrations of carbon dioxide (CO2) [i. e. , the CO2 fertilization effect (CFE)] sustains an important negative feedback on climate warming, but the temporal dynamics of CFE remain unclear. Using multiple long-term satellite- and ground-based datasets, we showed that global CFE has declined across most terrestrial regions of the globe from 1982 to 2015, correlating well with changing nutrient concentrations and availability of soil water. Current carbon cycle models also demonstrate a declining CFE trend, albeit one substantially weaker than that from the global observations. This declining trend in the forcing of terrestrial carbon sinks by increasing amounts of atmospheric CO2 implies a weakening negative feedback on the climatic system and increased societal dependence on future strategies to mitigate climate warming.
Grants:	European Commission 610028 European Commission 821003 European Commission 172476
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Science, Vol. 370, Issue 6522 (December 2020) p. 1295-1300, ISSN 1095-9203

DOI: 10.1126/science.abb7772

Postprint 15 p, 707.5 KB

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