Table 6 Simulation the effect of independent (ENGLS) and simultaneous (NSUR) fitting on confidence intervals and prediction intervals using models for biomass components and total biomass of individuals of Pinus elliottii Engelm.: leaves, branches, bole without bark, bole bark, root and total
From: Simultaneous estimation as alternative to independent modeling of tree biomass
Variables | Component | Average tree biomass (kg) | Biomass per hectare (t) | ||||
|---|---|---|---|---|---|---|---|
Biomass | CI | PI | Biomass | CI | PI | ||
ENGLS | |||||||
Age = 20 years N/ha = 972 d = 28.20 cm h = 22.6 m | Leaves | 17.79 | 1.90 | 6.42 | 17.29 | 1.85 | 6.24 |
Branches | 36.21 | 5.62 | 17.75 | 35.19 | 5.46 | 17.25 | |
Bole | 240.85 | 9.08 | 42.92 | 234.11 | 8.82 | 41.72 | |
Bark | 38.64 | 1.45 | 9.27 | 37.55 | 1.41 | 9.01 | |
Root | 40.84 | 2.94 | 10.31 | 39.70 | 2.86 | 10.02 | |
Total | 374.32 | 19.03 | 58.04 | 363.83 | 18.50 | 56.42 | |
NSUR | |||||||
Leaves | 18.08 | 1.90 | 3.05 | 17.57 | 1.85 | 2.96 | |
Branches | 35.42 | 4.51 | 11.89 | 34.43 | 4.38 | 11.56 | |
Bole | 239.63 | 10.58 | 38.81 | 232.92 | 10.28 | 37.73 | |
Bark | 38.79 | 3.37 | 5.55 | 37.71 | 3.28 | 5.40 | |
Root | 41.11 | 3.45 | 5.58 | 39.96 | 3.36 | 5.43 | |
Total | 373.03 | 11.31 | 52.21 | 362.59 | 10.99 | 50.75 | |