An implementation of the coupled photosynthesis - stomatal conductance model, using the Tuzet et al. (2003) model of stomatal conductance. Accepts all arguments of Photosyn (except gsmodel, of course).

PhotosynTuzet(g1 = 8, Ca = 400, psis = 0, kl = 2, sf = 3, psif = -2,
  ...)

Arguments

g1

The slope parameter. Note that the default value should be much higher than that used in the Medlyn et al. (2011) model to give comparable predictions.

Ca

Atmospheric CO2 concentration.

psis

Soil water potential (MPa). Note that soil-to-root hydraulic conductance is not implemented.

kl

Leaf-specific hydraulic conductance (mmol m-2 s-1 MPa-1)

sf

Shape parameter (-) of sigmoidal function of leaf water potential (see Tuzet et al. 2003)

psif

Leaf water potential at which stomatal conductance is 50% of maximum (MPa).

All other arguments in Photosyn