Recent global decline of CO2 fertilization effects on vegetation photosynthesis

Songhan Wang; Yongguang Zhang; Weimin Ju; Jing M. Chen; Philippe Ciais; Alessandro Cescatti; Jordi Sardans; Ivan A. Janssens; Mousong Wu; Joseph A. Berry; Elliott Campbell; Marcos Fernández-Martínez; Ramdane Alkama; Stephen Sitch; Pierre Friedlingstein; William K. Smith; Wenping Yuan; Wei He; Danica Lombardozzi; Markus Kautz; Dan Zhu; Sebastian Lienert; Etsushi Kato; Benjamin Poulter; Tanja G.M. Sanders; Inken Krüger; Rong Wang; Ning Zeng; Hanqin Tian; Nicolas Vuichard; Atul K. Jain; Andy Wiltshire; Vanessa Haverd; Daniel S. Goll; Josep Peñuelas

doi:10.1126/science.abb7772

Recent global decline of CO2 fertilization effects on vegetation photosynthesis

Songhan Wang, Yongguang Zhang, Weimin Ju, Jing M. Chen, Philippe Ciais, Alessandro Cescatti, Jordi Sardans, Ivan A. Janssens, Mousong Wu, Joseph A. Berry, Elliott Campbell, Marcos Fernández-Martínez, Ramdane Alkama, Stephen Sitch, Pierre Friedlingstein, William K. Smith, Wenping Yuan, Wei He, Danica Lombardozzi, Markus KautzDan Zhu, Sebastian Lienert, Etsushi Kato, Benjamin Poulter, Tanja G.M. Sanders, Inken Krüger, Rong Wang, Ning Zeng, Hanqin Tian, Nicolas Vuichard, Atul K. Jain, Andy Wiltshire, Vanessa Haverd, Daniel S. Goll, Josep Peñuelas

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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.

Original language	English (US)
Pages (from-to)	1295-1300
Number of pages	6
Journal	Science
Volume	370
Issue number	6522
DOIs	https://doi.org/10.1126/science.abb7772
State	Published - Dec 11 2020

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Wang, S., Zhang, Y., Ju, W., Chen, J. M., Ciais, P., Cescatti, A., Sardans, J., Janssens, I. A., Wu, M., Berry, J. A., Campbell, E., Fernández-Martínez, M., Alkama, R., Sitch, S., Friedlingstein, P., Smith, W. K., Yuan, W., He, W., Lombardozzi, D., ... Peñuelas, J. (2020). Recent global decline of CO2 fertilization effects on vegetation photosynthesis. Science, 370(6522), 1295-1300. https://doi.org/10.1126/science.abb7772

Wang, S, Zhang, Y, Ju, W, Chen, JM, Ciais, P, Cescatti, A, Sardans, J, Janssens, IA, Wu, M, Berry, JA, Campbell, E, Fernández-Martínez, M, Alkama, R, Sitch, S, Friedlingstein, P, Smith, WK, Yuan, W, He, W, Lombardozzi, D, Kautz, M, Zhu, D, Lienert, S, Kato, E, Poulter, B, Sanders, TGM, Krüger, I, Wang, R, Zeng, N, Tian, H, Vuichard, N, Jain, AK, Wiltshire, A, Haverd, V, Goll, DS & Peñuelas, J 2020, 'Recent global decline of CO2 fertilization effects on vegetation photosynthesis', Science, vol. 370, no. 6522, pp. 1295-1300. https://doi.org/10.1126/science.abb7772

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title = "Recent global decline of CO2 fertilization effects on vegetation photosynthesis",

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.",

author = "Songhan Wang and Yongguang Zhang and Weimin Ju and Chen, {Jing M.} and Philippe Ciais and Alessandro Cescatti and Jordi Sardans and Janssens, {Ivan A.} and Mousong Wu and Berry, {Joseph A.} and Elliott Campbell and Marcos Fern{\'a}ndez-Mart{\'i}nez and Ramdane Alkama and Stephen Sitch and Pierre Friedlingstein and Smith, {William K.} and Wenping Yuan and Wei He and Danica Lombardozzi and Markus Kautz and Dan Zhu and Sebastian Lienert and Etsushi Kato and Benjamin Poulter and Sanders, {Tanja G.M.} and Inken Kr{\"u}ger and Rong Wang and Ning Zeng and Hanqin Tian and Nicolas Vuichard and Jain, {Atul K.} and Andy Wiltshire and Vanessa Haverd and Goll, {Daniel S.} and Josep Pe{\~n}uelas",

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doi = "10.1126/science.abb7772",

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AU - Wang, Songhan

AU - Zhang, Yongguang

AU - Ju, Weimin

AU - Chen, Jing M.

AU - Ciais, Philippe

AU - Cescatti, Alessandro

AU - Sardans, Jordi

AU - Janssens, Ivan A.

AU - Wu, Mousong

AU - Berry, Joseph A.

AU - Campbell, Elliott

AU - Fernández-Martínez, Marcos

AU - Alkama, Ramdane

AU - Sitch, Stephen

AU - Friedlingstein, Pierre

AU - Smith, William K.

AU - Yuan, Wenping

AU - He, Wei

AU - Lombardozzi, Danica

AU - Kautz, Markus

AU - Zhu, Dan

AU - Lienert, Sebastian

AU - Kato, Etsushi

AU - Poulter, Benjamin

AU - Sanders, Tanja G.M.

AU - Krüger, Inken

AU - Wang, Rong

AU - Zeng, Ning

AU - Tian, Hanqin

AU - Vuichard, Nicolas

AU - Jain, Atul K.

AU - Wiltshire, Andy

AU - Haverd, Vanessa

AU - Goll, Daniel S.

AU - Peñuelas, Josep

PY - 2020/12/11

Y1 - 2020/12/11

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Recent global decline of CO2 fertilization effects on vegetation photosynthesis

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