Effects of mesophyll conductance on vegetation responses to elevated CO2 concentrations in a land surface model.
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ABSTRACT: Mesophyll conductance (gm ) is known to affect plant photosynthesis. However, gm is rarely explicitly considered in land surface models (LSMs), with the consequence that its role in ecosystem and large-scale carbon and water fluxes is poorly understood. In particular, the different magnitudes of gm across plant functional types (PFTs) are expected to cause spatially divergent vegetation responses to elevated CO2 concentrations. Here, an extensive literature compilation of gm across major vegetation types is used to parameterize an empirical model of gm in the LSM JSBACH and to adjust photosynthetic parameters based on simulated An - Ci curves. We demonstrate that an explicit representation of gm</
SUBMITTER: Knauer J
PROVIDER: S-EPMC6487956 | biostudies-literature | 2019 May
REPOSITORIES: biostudies-literature
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