Table 2 Estimation of the parameters and precision measurements of the adjusted equations for the estimation of the dry biomass stock (kg) as a function of the d30cm in the open Brazilian savannah
Model | β 0 | β 1 | β 2 | β 3 | R2 % (adjust.) | Sxy (kg) | Sxy (%) |
|---|---|---|---|---|---|---|---|
Hohenald Krenm | 7.7068* | − 2.4160* | 0.2447 | – | 71.20 | 11.13 | 70.13 |
Brenac | − 1.8494* | 2.0488 | − 7.8893* | – | 89.46 | 11.58 | 72.89 |
Spurr | − 2.8828* | 0.0352 | – | – | 89.04 | 6.87 | 43.26 |
Schumacher-Hall (logarithmic) | − 4.32 | 2.0157 | 1.5258 | – | 94.19 | 5.72 | 35.99 |
Stoate (Australian) | 4.1867* | − 0.1461 | 0.0649 | − 0.6371* | 93.87 | 5.14 | 32.34 |
Spurr (logarithmic) | − 4.446 | 1.1305 | – | – | 93.95 | 6.79 | 42.74 |
Honner | − 5.5889 | 57.2571 | – | – | 94.50 | 4.87 | 30.65 |
Takata | 40.3464 | − 0.5224 | – | – | 88.67 | 6.98 | 43.98 |
Schumacher-Hall | 0.01313 | 1.7793 | 2.0228 | – | 94.55 | 4.85 | 30.50 |