Canopy conductance, commonly denoted
, is a dimensionless quantity characterizing radiation distribution in tree canopy.
By definition, it is calculated as a ratio of daily water use to daily mean vapor pressure deficit (VPD).
[1] Canopy conductance can be also experimentally obtained by measuring sap flow and environmental variables.
[2] Stomatal conductance may be used as a reference value to validate the data, by summing the total stomatal conductance
of all leaf classes within the canopy.
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