Table 2 A list of the abbreviations and symbols used in the text and in equations
Symbol | Description |
|---|---|
APAR | Absorption of photosynthetically active radiation (PAR) (MJ m−2 month−1) |
e % | Relative average error |
ζ | Fraction of ground area covered by the canopy |
f H | Fraction of PAR that is absorbed by a homogeneous canopy |
f i | Fraction of PAR that is absorbed by species i |
i | Indicates the i th species of n species |
j | Indicates the j th canopy layer of n layers |
k | Light extinction coefficient |
k H | Light extinction coefficient of a homogeneous canopy |
H b | Height to crown base (m) |
h m | The mid-crown-height (m) of a layer or species; given as (height – H b )/2 + H b |
λ h | Empirical parameter to account for the effects of horizontal heterogeneity within the j th canopy layer |
λ v | Empirical parameter to quantify the vertical structure of a canopy layer and to partition layer APAR to each species within the layer |
L | Leaf area index (m2 m−2) |
L A | Individual tree leaf area (m2) |
LAD | Leaf-area density in terms of leaf area per crown volume (m2 m−3) |
LCL | Live-crown length (m) |
MAE% | Relative mean absolute error |
MSE | Mean square error |
O | Observed calculations from the tree-level model (Maestra) |
| Mean of O |
P | Predicted values from the stand-level model |
| Mean of P |
S A | Crown surface area of individual trees (m2) |
v frac | Sum of the crown volume (m3) of all crowns within a given layer within one hectare divided by the total volume of that layer |
ϕ | Empirical parameter to quantify the horizontal structure of a canopy layer (see Appendix A) |
z adj | An adjusted mean midday solar zenith angle (°) (see Appendix B) |