Equations / Aboveground biomass
Pan moist tropical AGB from DBH (Table 4, model 2)
As printed (Table 4, model 2)
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.1801 + 2.5624 * ln(D))D- Diameter at breast height (1.3 m), cm
Pooled with data from Brown (1997), Araújo et al. (1999), Nelson et al. (1999) and Ketterings et al. (2001); Africa contributes only the Campo-Ma'an trees. The paper reports a larger average error (29.5%) for its general equations than for Chave et al. (2005) (20.3%) in cross-site tests. Coefficients are used as printed; the paper does not state that the log-scale back-transformation correction factor is included, so none is applied. Reported R² is the adjusted R². Equation chosen from the paper's recommended set (7 of its equations captured).
doi:10.1016/j.foreco.2010.08.034 · Paywalled · copy we read
N 443, RSE 0.444, Adj. R2 0.9671, D range 1–148
- Trees measured
- 443
- DBH range
- 1–148 cm
- R²
- 0.9671
- Residual SE
- 0.444
- Method
- log-log regression
- Where
- Moist tropical forests; Campo-Ma'an Cameroon, Brazil, Indonesia, Cambodia
- Last checked
- 2026-11-01
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 = 30 | 688.9 | 688.9 | Computed from the printed form hand-computed from the published form |
Related
- Pan moist tropical AGB from DBH, height and wood density (Table 4, model 5) · Djomo et al. 2010 · DBH + Height + Wood density
- Pan moist tropical AGB from D²H (Table 4, model 3) · Djomo et al. 2010 · DBH + Height
- Campo-Ma'an AGB from DBH, height and wood density (Table 3, model 5) · same paper · Aboveground biomass
- Campo-Ma'an AGB from DBH and wood density (Table 3, model 4) · same paper · Aboveground biomass
- Campo-Ma'an AGB from DBH (Table 3, model 2) · same paper · Aboveground biomass
- Campo-Ma'an AGB from D²H (Table 3, model 3) · same paper · Aboveground biomass
- Pan moist tropical AGB from DBH, height and wood density (Table 4, model 5) · same paper · Aboveground biomass
- Pan moist tropical AGB from D²H (Table 4, model 3) · same paper · Aboveground biomass