Research Article
Biomass and Volume Models Based on Stump Diameter for Assessing Degradation of Miombo Woodlands in Tanzania
Table 6
Belowground biomass model coefficients and performance.
| Site | Model forms | Model coefficients | AIC | SE | SE% | E% | R2 | a | b | c |
| Tabora | | 0.0882 | 2.1386 | | 222.8 | 87.69 | 44.05 | -13.59 | 0.86 | | -10.1727 | 0.1590 | | 228.2 | 90.88 | 45.65 | -13.31 | 0.85 | | -5.8520 | -0.3781 | 0.1651 | 230.2 | 89.98 | 45.2 | -13.31 | 0.85 |
| Manyara | | 0.1434 | 2.0144 | | 199.6 | 122.52 | 39.72 | -8.36 | 0.78 | | 0.7040 | 0.1546 | | 199.0 | 122.12 | 39.59 | -9.27 | 0.79 | | -8.9545 | 1.9007 | 0.0945 | 196.2 | 141.96 | 46.02 | -3.18 | 0.71 |
| Lindi | | 0.08147 | 2.1896 | | 211.2 | 180.71 | 37.18 | -13.42 | 0.89 | | 0.1553 | 0.1454 | | 212.6 | 259.78 | 53.45 | 6.15 | 0.77 | | 41.0525 | -4.9379 | 0.25975 | 212.6 | 157.47 | 32.4 | -10.84 | 0.91 |
| Regional | | 0.1056 | 2.1035 | | 623.5 | 154.01 | 46.5 | -12.2 | 0.86 | | -0.8040 | 0.1526 | | 624.9 | 164.67 | 49.72 | -11.41 | 0.84 | | 0.9476 | -0.3688 | 0.1631 | 626.5 | 158.98 | 48.0 | -12.04 | 0.85 |
|
|
Note: Bold type indicates selected model.
|