Photosynthesis of Vascular Plants
Solar zenith and
aZimuth angles
Proportion of direct beam
and diffuse for global
irradiat ion
Solar shortwave direct beam and,
diffuse from sky and fol iage;
sunlit and shaded foliage area
in all layers
Longwave radiat ion reaching
all layers from sky and
soil surface
Longwave radiation exchange
between leaf layers
(for sunlit and shaded leaves in all layers)
no
no
yes
Photosynthetic rates of
sunlit and shaded leaves
In all loyers
411
Fig. 20.1. Computation sequence of the single-species homogeneous canopy model.
(Caldwell et al. 1986)