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Vocabulary Term Details

Stomatal conductance

Definition (

By definition, stomatal conductance, usually measured in mmol m-2 s-1, is the measure of the rate of passage of carbon dioxide (CO2) entering, or water vapor exiting through the stomata of a leaf. Stomata are small pores on the top and bottom of a leaf that are responsible for taking in and expelling CO2 and moisture from and to the outside air. The rate of stomatal conductance, or its inverse, stomatal resistance, is directly related to the boundary layer resistance of the leaf and the absolute concentration gradient of water vapor from the leaf to the atmosphere. (Wikipedia)

Preferred Units: N/A

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