Parameter | Estimate |
---|
BASE model | Model GB99 | Model M3_HABH |
---|
β
1
| T-S | T-S | T-S |
β
2
| – | T-S | T-S |
β
21
| 0.0929 (0.0130) | – | – |
β
3
| 0.4125 (0.0189) | – | 0.5502 (0.0053) |
β
30
| – | 0.8213 (0.0351) | – |
β
31
| – | −0.2040 (0.0199) | – |
γ
1
| 1.4420 (0.0061) | – | 1.7149 (0.0440) |
γ
10
| – | 0.9377 (0.0237) | – |
γ
11
| – | 0.3522 (0.0169) | – |
γ
2
| 16.6627 (2.4157) | 14.5371 (0.6206) | 2.1955 (0.1190) |
γ
3
| 64.2933 (3.0251) | – | 34.3438 (0.4982) |
γ
31
| – | 1.3431 (0.0351) | – |
- The standard errors of the parameter estimates are given in parentheses. For the BASE model, parameter β
1 is constrained to dbh, and for models M3_HABH and GB99, parameter β
1 is constrained to dbh and β
2 to the upper stem diameter (diameter at 6 m for the GB99 model). The estimates for the constrained parameters are tree-specific (T-S). The parameter estimates given were all statistically significant (p ≤ 0.0001). Residual correlation parameters are not included because they are not important for model prediction purposes