Equations / Stem biomass
Parque Cerrado, stem biomass with bark, simultaneous WNSUR fit (Table 4)
As printed (Table 4, p. 712)
In this library's units, ready to compute (kg)
Stem biomass = 0.01987 * D^2.00834 * H^1.00618D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Part of an additive system in which AGB = BF + BC. Equation printed with DAP and Ht as variables; units are not stated beside the model and are read as DAP in cm and Ht in m (the paper gives the DAP >= 5 cm inclusion criterion and biomass in kg); magnitudes are consistent. Adjusted R2 (not R2) is printed, so fit.r2 is left out. The paper reports no DAP or height range of the fitted trees (only the DAP >= 5 cm inclusion criterion), so none is given. Dry biomass from 97 destructively sampled trees in ten 10 m x 10 m plots.
doi:10.17765/2176-9168.2021v14n3e8125 · Open access · copy we read
97 indivíduos presentes em dez parcelas de 10 metros x 10 metros
- Trees measured
- 97
- Method
- weighted nonlinear seemingly unrelated regression (WNSUR) system, Schumacher-Hall form
- Where
- Northwest Goiás, Parque Cerrado (Cerrado biome)
- Last checked
- 2026-11-02
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
On every build, the library's form and the paper's own form (in its units) must both give these values within 1%.
| Inputs | Expected | We get | From |
|---|---|---|---|
| D = 5, H = 4 | 2.03 | 2.03 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
| D = 10, H = 6 | 12.3 | 12.3 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
| D = 20, H = 9 | 74.3 | 74.3 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
Related
- Parque Cerrado, stem biomass with bark, independent fit (Table 2) · Santana et al. 2021 · DBH + Height
- Parque Cerrado, total aboveground biomass, independent fit (Table 2) · same paper · Aboveground biomass
- Parque Cerrado, total aboveground biomass as stem + crown, simultaneous WNSUR system (Table 4) · same paper · Aboveground biomass
- Parque Cerrado, stem biomass with bark, independent fit (Table 2) · same paper · Stem biomass