Table 5 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 = 15 years N/ha = 1.020 d = 25.50 cm h = 19.4 m | Leaves | 15.43 | 1.40 | 6.29 | 15.74 | 1.43 | 6.42 |
Branches | 27.41 | 4.15 | 17.34 | 27.96 | 4.23 | 17.68 | |
Bole | 163.30 | 8.43 | 42.79 | 166.57 | 8.60 | 43.65 | |
Bark | 29.77 | 1.17 | 9.23 | 30.36 | 1.19 | 9.41 | |
Root | 30.60 | 2.14 | 10.11 | 31.22 | 2.19 | 10.31 | |
Total | 266.52 | 17.12 | 57.70 | 271.85 | 17.47 | 58.85 | |
NSUR | |||||||
Leaves | 15.44 | 1.42 | 2.78 | 15.75 | 1.45 | 2.83 | |
Branches | 26.83 | 3.48 | 11.54 | 27.37 | 3.55 | 11.77 | |
Bole | 159.83 | 8.05 | 38.20 | 163.02 | 8.21 | 38.97 | |
Bark | 29.62 | 2.63 | 5.14 | 30.21 | 2.68 | 5.24 | |
Root | 30.72 | 2.54 | 5.07 | 31.33 | 2.60 | 5.17 | |
Total | 262.44 | 9.03 | 51.77 | 267.68 | 9.21 | 52.80 | |