Using an optimality model to understand medium and long-term responses of vegetation water use to elevated atmospheric CO2 concentrations

Modelling results presented in this paper suggest that elevated atmospheric CO2 concentrations (eCO2) lead to reductions in leaf-level stomatal conductance and increases in water use efficiency. One consequence was a predicted increase in the perennial vegetation cover and rooting depth in water-lim...

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Bibliographic Details
Main Authors: Schymanski, Stanislaus J., Roderick, Michael L., Sivapalan, Murugesu
Format: Online
Language:English
Published: Oxford University Press 2015
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4497478/
Description
Summary:Modelling results presented in this paper suggest that elevated atmospheric CO2 concentrations (eCO2) lead to reductions in leaf-level stomatal conductance and increases in water use efficiency. One consequence was a predicted increase in the perennial vegetation cover and rooting depth in water-limited regions, which provides further support to the view that the globally observed advancement of woody plants is enhanced by fossil fuel emissions. Simulated vegetation responses to eCO2 depend on time scale and climate, but generally compare well with free air CO2 enrichment experiments (FACE).