Work

Metrics of plant response to CO2 Enrichment

Year: 2025

Type: article

Abstract: The concept of “Reduction in CO2-stimulated uptake rate inoscillating elevated CO2” (Holtum and Winter, 2003), the FIRST METRIC of plant response in oscillating CO2 enrichment compared to steady CO2 enrichment at the mean of the CO2 concentration of the oscillating CO2 with a value of 0.33 does not describe the actual response of plants grown in fluctuating CO2, and neither does the associated SECDND METRIC “Relative Response Ratio” of Allen et al. (2020) with a value of 0.67. A THIRD METRIC of plant response to CO2 enrichment, “Plant response in fluctuating elevated CO2/ Plant response in constant elevated CO2”, which has an average value of 0.85, is much more relevant and likely to represent the response in Free Air CO Enrichment (FACE).

Source: Agricultural and Forest Meteorology

DOI: 10.1016/j.agrformet.2025.110557

Authors: Leon H. Allen, Bruce A. Kimball, James A. Bunce, Kenneth J. Boote, Jeffrey W. White

Institutions: Agricultural Research Service, United States Department of Agriculture, U.S. Arid Land Agricultural Research Center, Beltsville Agricultural Research Center, University of Florida

Language: English

Topic: Plant responses to elevated CO2

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Climate action

Open Access status: hybrid

Estimated APC paid: $3,590