REN R446 Lecture Notes - Lecture 4: Autotroph, System Analysis, Stomatal Conductance
20 Dec 2017
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Stomatal resistance calculated with the water molecule is going to be the same as the one used in the plant growth model. Irradiance is multiplied by 0. 5 because it is the part that is used in the visible spectrum and then 4. 56 converting it from w/m2 to micro-einstein"s/m2s (page 92 of the notes) Variable l is the lai calculated by the leaf carbon: it makes the model dynamic because it indicates growth. If rs 2 = rs min 2 meaning that there is no constraints from water: indicates that co2 may become limited, relationship between stomatal resistance and the photosynthetic rate. In direct proportions roughly: because stomata opening, it means that co2 goes in and h2o goes out, proportional to each other, the value will decline linearly. Know that increasing radiation has a saturating effect on co2 fixation: co2 in a function of temperature related to par.
