Comment on “Recent global decline of CO 2 fertilization effects on vegetation photosynthesis”

作者：Yuxing Sang, Ling Huang, Xuhui Wang, Trevor F. Keenan, Chenzhi Wang, Yue He · 发表于：Science · 年份：2021 · DOI：10.1126/science.abg4420 · 被引用次数：28 · 研究领域：Atmospheric and Environmental Gas Dynamics、Plant Water Relations and Carbon Dynamics、Plant responses to elevated CO2

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).