A simple hypothesis of how leaf and canopy-level transpiration and assimilation respond to elevated CO2 reveals distinct response patterns between disturbed and undisturbed vegetation
Elevated CO2 increases leaf-level water-use efficiency (ω) almost universally. How canopy-leveltranspiration and assimilationfluxes respond to increasedωis currently unclear. We present a simple,resource-availability-based hypothesis of how equilibrium (or mature) leaf and canopy transpiration andassimilation rates, along with leaf area index (L), respond to elevated CO2. We quantify this hypothesis in theform of a model and test it against observations from eight Free Air CO2 Enrichment sites...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Geophysical Research: Biogeosciences|
|Access Rights:||Open Access|
|Donohue_etal_2017_JGR-B.pdf||2.3 MB||Adobe PDF|
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