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Declining tree growth rates despite increasing water-use efficiency under elevated CO₂ reveals a possible global overestimation of CO₂ fertilization effect.

ABSTRACT: Though rising atmospheric CO₂ concentrations (C_a) harm the environment and society, they may also raise photosynthetic rates and enhance intrinsic water-use efficiency (iWUE). Numerous short-term studies have investigated tree growth under elevated CO₂ (eCO₂) conditions, but no long-duration study has investigated eCO₂ impacts on tree growth and iWUE under natural conditions. Utilizing a new dendrochronological experimental design in a heavily-touristed nature preserve in Southwest China (Jiuzhaigou National Nature Reserve), we compared tree growth (e.g., basal area increment) and iWUE in two biophysically and environmentally similar valleys with contrasting anthropogenic activities. Trees in the control valley with ambient CO₂

SUBMITTER: Laffitte B

PROVIDER: S-EPMC9626951 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Declining tree growth rates despite increasing water-use efficiency under elevated CO₂ reveals a possible global overestimation of CO₂ fertilization effect.

OmicsDI is part of the ELIXIR infrastructure

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Dataset Information

Declining tree growth rates despite increasing water-use efficiency under elevated CO2 reveals a possible global overestimation of CO2 fertilization effect.

OmicsDI is part of the ELIXIR infrastructure

Tweets

Declining tree growth rates despite increasing water-use efficiency under elevated CO₂ reveals a possible global overestimation of CO₂ fertilization effect.