Comment on “Recent global decline of CO <sub>2</sub> fertilization effects on vegetation photosynthesis”
Yuxing Sang, Ling Huang, Xuhui Wang, Trevor F. Keenan, Chenzhi Wang, Yue He
Abstract
Wang et al . (Research Articles, 11 December 2020, p. 1295) reported a large decline in the CO 2 fertilization effect (CFE) on global photosynthesis, on the basis of changing regression coefficients of CO 2 (β) for satellite proxies/products of photosynthesis. We show that their methods cannot robustly estimate CFE, leading to incorrect attribution, and largely neglect CO 2 effects on the photosynthetic enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO).
Topics & Concepts
PhotosynthesisRuBisCOHuman fertilizationPyruvate carboxylaseBotanyEnvironmental scienceBiologyAgronomyEnzymeBiochemistryAtmospheric and Environmental Gas DynamicsPlant Water Relations and Carbon DynamicsPlant responses to elevated CO2