Table 3 Evaluation statistics for predicting aboveground biomass from ALOS PALSAR and climate variables, using corrected and uncorrected NFI plot data
| Data | NFI plots | R2 | RMSE | %RMSE | Bias | SD of error |
|---|---|---|---|---|---|---|
| Calibration (n = 152) | Uncorrected | 0.17 | 44.7 | 48.1 | − 0.3 | 44.3 |
| Corrected by small trees | 0.18 | 41.1 | 37.4 | 0.5 | 44.9 | |
| Corrected by age | 0.19 | 44.8 | 43.7 | 0.2 | 41.2 | |
| Corrected by age and small trees | 0.18 | 42.0 | 35.4 | 0.2 | 42.2 | |
| Validation (n = 66) | Uncorrected | 0.10 | 41.3 | 45.0 | 5.6 | 40.8 |
| Corrected by small trees | 0.13 | 40.1 | 36.6 | 4.5 | 39.8 | |
| Corrected by age | 0.10 | 39.5 | 38.8 | 4.2 | 39.2 | |
| Corrected by age and small trees | 0.13 | 38.9 | 32.8 | 4.9 | 38.6 |