Equations / Root biomass
Miombo coarse root biomass, DBH only
Root biomassMiombo woodland treesMozambiquenaturalRead from the original paper
Many species, no single photo
Equation
As printed (Table 1)
log(Bdest,r) = 2.262 log(DBH,dest)-3.370
In this library's units, ready to compute (kg)
Root biomass = exp(2.262 * ln(D) - 3.370) / 0.47D- Diameter at breast height (1.3 m), cm
Paper gives kg carbon; divided by the paper's 0.47 carbon fraction to give kg dry mass. No correction factor, as in the paper.
Source
doi:10.1111/j.1744-7429.2010.00713.x · Paywalled · copy we read
the mean (47%±0.20) was used for all conversions to C mass
- Trees measured
- 23
- R²
- 0.94
- Residual SE
- 0.43
- Method
- OLS on ln-transformed data, no correction factor
- Where
- Nhambita, Sofala province, Mozambique
- Last checked
- 2026-11-01
Calculate
64.2
Root biomass (kg)
30.2
Carbon (kg), ×0.47
111
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 | 64.2 | 64.2 | Computed from the printed form hand-computed from the published form |
Related
- Malawi miombo belowground biomass, DBH only (Model 1) · Kachamba et al. 2016 · DBH
- Miombo stem biomass (trunk and branches), DBH only · same paper · Aboveground biomass, without leaves