Equations / Aboveground biomass
Pan moist tropical AGB from D²H (Table 4, model 3)
Aboveground biomassMixed species, pan moist tropical forests (Campo-Ma'an plus data from Asia and South America)PantropicalnaturalRead from the original paper
Many species, no single photo
Equation
As printed (Table 4, model 3)
3. ln(M) = a + b ln(D2 H) a = −3.2249 b = 0.9885
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-3.2249 + 0.9885 * ln(D^2 * H))D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Pooled pan moist tropical data set (see pan-d). 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).
Source
doi:10.1016/j.foreco.2010.08.034 · Paywalled · copy we read
N 274, RSE 0.443, Adj. R2 0.9710, D range 1–138
- Trees measured
- 274
- DBH range
- 1–138 cm
- R²
- 0.971
- Residual SE
- 0.443
- Method
- log-log regression
- Where
- Moist tropical forests; Campo-Ma'an Cameroon, Brazil (Pará, Central Amazon), Indonesia
- Last checked
- 2026-11-01
Calculate
Height from
797
Aboveground biomass (kg)
375
Carbon (kg), ×0.47
1,374
CO₂e (kg), ×44/12
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
Checks this equation passes
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, H = 25 | 797 | 797 | 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 DBH (Table 4, model 2) · Djomo et al. 2010 · DBH
- 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 DBH (Table 4, model 2) · same paper · Aboveground biomass