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Exposure to an enriched CO2 atmosphere alters carbon assimilation and allocation in a pine forest ecosystem

Exposure to an enriched CO2 atmosphere alters carbon assimilation and allocation in a pine forest ecosystem

Global Change Biology 9(10): 1378-1400

We linked a leaf-level CO2 assimilation model with a model that accounts for light attenuation in the canopy and measurements of sap-flux-based canopy conductance into a new canopy conductance-constrained carbon assimilation (4C-A) model. We estimated canopy CO2 uptake (AnC) at the Duke Forest free-air CO2 enrichment (FACE) study. Rates of AnC estimated from the 4C-A model agreed well with leaf gas exchange measurements (Anet) in both CO2 treatments.

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Accession: 003764891

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DOI: 10.1046/j.1365-2486.2003.00662.x

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