|
Model (ACD=)
|
a
|
b
|
c
|
\(\sigma _{1}^{2}\)
|
\(\sigma _{2}^{2}\)
|
R2
|
RMSE
|
BIAS
|
|---|
|
1 aTCHb
|
6.58±0.67
|
1.49±0.040
| |
40.8
|
3.30
|
0.75
|
35.2
|
-1.6
|
|
2 \(a TCH^{b} \widehat {BA}^{c} \widehat {\rho }^{b_{3}}\)
| |
See text
| | | |
0.76
|
34.3
|
-1.8
|
|
3 aTCHb(1+cCover10)
|
6.27±0.64
|
1.51±0.04
|
0.93±0.16
|
40.7
|
3.02
|
0.74
|
35.9
|
-2.7
|
|
4 \(a \sum {(CD_{i} \cdot H_{i})^{b}} \)
|
0.023±0.0037
|
1.57±0.033
| |
40.5
|
3.53
|
0.73
|
35.6
|
0.8
|
|
5 \( a + b \cdot (\overline {CD_{i} \cdot H_{i} }) \)
|
30.39±3.3
|
3.4±0.062
| |
24.7
|
4.41
|
0.78
|
32.3
|
-0.1
|
- Terms in the models include basal area (BA) and wood density
(ρ) recorded in plots,
Top-of-the-Canopy Height (TCH) and residual variation in canopy cover
(Cover10) estimated from ALS data, as well as
Crown Diameter (CD) and Height (H) of individual overstorey trees obtained
by segmentation of the ALS dataset. Mean ± 1 SD of coefficient values are
given. Goodness of fit is assessed using R2, RMSE (%) and bias
(%)
