Table 9 Stand–level projection mean bias (MB; observed – predicted), root mean square error (RMSE), and percent bias (%Bias) for total stem density (# ha–1), quadratic mean diameter (QMD; cm), and basal area (m2∙ha–1) by tree mortality method and forest, which are Dubuar Memorial Forest (DMF), Huntington Wildlife Forest (HWF), Pack Demonstration Forest (PDF), Pack Experimental Forest (PEF), and Shirley Forest (SF)
Forest | N | Years simulated (min – max) | Stem density | QMD | Basal area | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
MB | RMSE | %Bias | MB | RMSE | %Bias | MB | RMSE | %Bias | |||
Expansion Factor method | |||||||||||
DMF | 10 | 8.9 (7 – 17) | 6.69 | 64.18 | 5.00 | –0.29 | 1.47 | –0.90 | –0.28 | 3.10 | 1.22 |
HWF | 59 | 20.1 (10 – 31) | 174.81 | 214.62 | 30.08 | –3.21 | 5.83 | –10.64 | 5.31 | 7.04 | 18.19 |
71 | 10.0 (10 – 10) | 130.67 | 188.45 | 13.95 | –0.98 | 1.85 | –4.41 | 0.80 | 3.79 | 0.70 | |
PEF | 2 | 8.5 (7 – 10) | 87.72 | 89.38 | 17.85 | –1.34 | 1.49 | –4.98 | 2.59 | 3.21 | 9.04 |
SF | 103 | 8.7 (3 – 24) | 22.06 | 48.47 | 6.39 | –0.11 | 1.54 | –0.59 | 0.81 | 2.38 | 4.39 |
Overall | 245 | 11.8 (3 – 31) | 90.23 | 150.35 | 14.32 | –1.13 | 3.20 | –4.17 | 1.86 | 4.35 | 6.55 |
Optimal Cutpoint method | |||||||||||
DMF | 10 | 8.9 (7 – 17) | –18.53 | 77.85 | –1.01 | –0.28 | 1.46 | –0.86 | –1.54 | 3.93 | –4.03 |
HWF | 59 | 20.1 (10 – 31) | 74.97 | 136.73 | 12.48 | –2.97 | 5.67 | –9.96 | –1.09 | 5.28 | –1.81 |
71 | 10.0 (10 – 10) | 58.82 | 143.28 | 5.84 | –0.96 | 1.83 | –4.29 | –1.39 | 4.09 | –4.99 | |
PEF | 2 | 8.5 (7 – 10) | 49.42 | 55.25 | 10.13 | –1.30 | 1.47 | –4.86 | –0.19 | 0.35 | –1.16 |
SF | 103 | 8.7 (3 – 24) | –5.64 | 53.52 | –0.32 | –0.08 | 1.55 | –0.48 | –0.51 | 2.83 | –0.85 |
Overall | 245 | 11.8 (3 – 31) | 32.38 | 109.22 | 4.61 | –1.05 | 3.14 | –3.92 | –0.95 | 3.94 | –2.42 |