Environmental Engineering Reference
In-Depth Information
Fig. 5.4
Map of estimated annual GPP for Italian forests
to the original model routine as proposed by Landsberg and Waring (
1997
). A new
environmental modifier introduced in this new version is the light modifier
f
L
, to
describe the nonlinearity light response of forest ecosystem (Grace et al.
1995
;
Baldocchi and Harley
1995
). The light modifier describes, with a hyperbolic func-
tion, the gradual saturation of GPP with increasing irradiance, as proposed by
Makela et al. (
2008
):
