Comment on “Recent global decline of CO2 fertilization effects on vegetation photosynthesis”

Wang et al. (Research Articles, 11 December 2020, p. 1295) reported a large decline in the CO2 fertilization effect (CFE) on global photosynthesis, on the basis of changing regression coefficients of CO2 (β) for satellite proxies/products of photosynthesis. We show that their methods cannot robustly...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2021-09, Vol.373 (6562), p.eabg4420-eabg4420
Main Authors: Sang, Yuxing, Huang, Ling, Wang, Xuhui, Keenan, Trevor F, Wang, Chenzhi, He, Yue
Format: Article
Language:English
Subjects:
Carbon dioxide
Fertilization
Photosynthesis
Regression coefficients
Ribulose-1,5-bisphosphate
Ribulose-bisphosphate carboxylase
Vegetation effects
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Summary:Wang et al. (Research Articles, 11 December 2020, p. 1295) reported a large decline in the CO2 fertilization effect (CFE) on global photosynthesis, on the basis of changing regression coefficients of CO2 (β) for satellite proxies/products of photosynthesis. We show that their methods cannot robustly estimate CFE, leading to incorrect attribution, and largely neglect CO2 effects on the photosynthetic enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO).
ISSN:0036-8075
1095-9203
DOI:10.1126/science.abg4420