Equations / Aboveground biomass, without leaves
Miombo stem biomass (trunk and branches), DBH only
Aboveground biomass, without leavesMiombo woodland treesMozambiquenaturalRead from the original paper
Many species, no single photo
Equation
As printed (Table 1)
log(Bdest,s) = 2.601 log(DBH,dest)-3.629
In this library's units, ready to compute (kg)
Aboveground biomass, without leaves = exp(2.601 * ln(D) - 3.629) / 0.47D- Diameter at breast height (1.3 m), cm
The paper's equation gives kg carbon (log is natural log). Converted here to kg dry mass by dividing by the paper's mean carbon fraction 0.47; that division is in both expressions. Stem biomass covers trunk and branches; leaves are not included, so it slightly underestimates total AGB. Back-transformed without a correction factor, as the authors did.
Source
doi:10.1111/j.1744-7429.2010.00713.x · Paywalled · copy we read
The 29 sampled trees ranged in DBH from 5-73 cm.
the mean (47%±0.20) was used for all conversions to C mass
- Trees measured
- 29
- DBH range
- 5–73 cm
- R²
- 0.93
- Residual SE
- 0.52
- Method
- OLS on ln-transformed data, no correction factor
- Where
- Nhambita, Sofala province, Mozambique
- Last checked
- 2026-11-01
Calculate
136.7
Aboveground biomass, without leaves (kg)
64.26
Carbon (kg), ×0.47
235.6
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 = 20 | 136.7 | 136.7 | Computed from the printed form hand-computed from the published form |
| D = 50 | 1,482 | 1,482 | Computed from the printed form hand-computed from the published form |
Related
- Malawi miombo AGB, DBH only (Model 1) · Kachamba et al. 2016 · DBH
- Malawi miombo AGB, DBH and height (Model 2, best AIC) · Kachamba et al. 2016 · DBH + Height
- Malawi miombo AGB, DBH and wood density (Model 3) · Kachamba et al. 2016 · DBH + Wood density
- Tanzania miombo AGB, DBH only · Mugasha et al. 2013 · DBH
- Tanzania miombo AGB, DBH and height · Mugasha et al. 2013 · DBH + Height
- Miombo coarse root biomass, DBH only · same paper · Root biomass