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

Yuxing Sang | Zendy; Ling Huang | Zendy; Xuhui Wang | Zendy; Trevor F. Keenan | Zendy; Chenzhi Wang | Zendy; Yue He | Zendy

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

Author(s) -

Yuxing Sang,

Ling Huang,

Xuhui Wang,

Trevor F. Keenan,

Chenzhi Wang,

Yue He

Publication year - 2021

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.abg4420

Subject(s) - photosynthesis , rubisco , human fertilization , pyruvate carboxylase , botany , environmental science , biology , agronomy , enzyme , biochemistry

Wanget 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).

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