Model | Stand age (yrs) | Intercept (ln(α)) | Slope (β)b | Model | fit | criteria |
---|---|---|---|---|---|---|
R 2 | AIC | RMSE | ||||
1 | 6 | −2.9 | 2.57 (2.49–2.65) | 0.997 | −70.8 | 0.077 |
15 | −2.01 | 2.25 (2.11–2.39) | 0.984 | −84.0 | 0.095 | |
27 | −0.32 | 1.84 (1.53–2.15) | 0.909 | −45.5 | 0.717 | |
34 | −2.12 | 2.43 (2.18–2.68) | 0.958 | −64.3 | 0.143 | |
All ages | −2.83 | 2.60 (2.46–2.74) | 0.954 | −170.6 | 0.271 | |
2 | 6 | −3.49 | 0.97 (0.94–1.00) | 0.998 | −66.6 | 0.089 |
15 | −3.64 | 0.96 (0.90–1.02) | 0.980 | −79.4 | 0.107 | |
27 | −1.71 | 0.78 (0.67–0.89) | 0.938 | −51.4 | 0.059 | |
34 | −3.08 | 0.93 (0.87–0.99) | 0.983 | −80.5 | 0.092 | |
All ages | −3.31 | 0.95 (0.91–0.99) | 0.976 | −217.1 | 0.192 | |
3 | 6 | −4.85 | 3.79 (3.22–4.36) | 0.93 | −24.2 | 0.365 |
15 | −11.28 | 5.85 (4.71–6.99) | 0.858 | −42.3 | 0.285 | |
27 | −5.53 | 3.79 (2.73–4.85) | 0.79 | −32.8 | 0.274 | |
34 | −4.15 | 3.23 (2.63–3.83) | 0.876 | −44.8 | 0.246 | |
All ages | −3.49 | 3.04 (2.81–3.27) | 0.911 | −126.6 | 0.376 |