Table 4 Comparison of biomass estimates measured in the Legacy Tree Database and predictions by three allometric biomass equations for the Legacy trees: local allometrics presented in this study, Jenkins et al. [11], and the Forest Inventory and Analysis Component Ratio Method (FIA-CRM)
|  | All Species (n = 285) | Lodgepole pine (n = 114) | Ponderosa pine (n = 108) | Douglas-fir (n = 63) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RMSE | Bias | RMSE | Bias | RMSE | Bias | RMSE | Bias | |||||||||
kg | % | kg | % | kg | % | kg | % | kg | % | kg | % | kg | % | kg | % | |
Local | 27.9 | 46.3 | 9.1 | 15.1 | 30.7 | 71.3 | 16.0 | 37.1 | 16.6 | 23.1 | 3.8 | 5.2 | 36.6 | 51.7 | 5.8 | 8.2 |
Jenkins | 40.6 | 67.4 | 9.3 | 15.4 | 16.1 | 37.5 | 5.2 | 12.0 | 17.3 | 23.9 | − 3.3 | − 4.5 | 80.5 | 113.7 | 38.2 | 54.0 |
FIA-CRM | 37.3 | 62.0 | − 16.1 | − 26.8 | 23.0 | 53.5 | − 7.9 | − 18.3 | 45.4 | 62.9 | − 27.1 | − 37.6 | 42.5 | 60.0 | − 12.3 | − 17.4 |