From: A rate equation model of stomatal responses to vapour pressure deficit and drought
Parameter | Range | Symbol | References |
---|---|---|---|
Xylem water potential | 0 to -2.0 MPa | ΨX | |
Subsidiary cell to guard cell water potential difference | -0.1 to -0.05 MPa | ΔΨSG(t) | [45] |
Maximum Guard Cell Volume | 4.3 × 10-16 m3 | Vmax | [46] |
Maximum Stomatal Aperture | 5 × 10-6m | Stommax | |
Stomata Density | 250 × 106 /m2 | σS | |
Subsidiary cell : Guard Cell Contact Surface Area | 2.4 × 10-10m2 | ASG | [40] |
Fraction of total leaf volume that is air | 50% | fv | [40] |
Leaf Thickness | 1 × 10-3m | Leafthick | Eamus unpbl. |
% Mesophyll Cell surface in contact with air | 50% | fc | [40] |
Maximum membrane hydraulic conductivity | 5 × 10>-14m s-1 Pa-1 | LP | [47] |
Mesophyll cell wall thickness | 3 × 10-6 m | ΔxMW | Eamus unpbl. |
Depth of stomatal channel | 5 × 10-6 m | ΔxGW | Eamus unpbl. |
Wax Factor Out | 2 × 104 | WOUT | |
Wax Factor IN | 5 × 103 | WIN | |
Ratio of cuticular to stomatal transpiration when stomata are fully open | Ca 0.01 | 24 |