Equations / Aboveground biomass, without leaves

Malawi miombo AGB, DBH only (Model 1)

Aboveground biomass, without leavesMiombo woodland treesMalawinaturalRead from the original paper

Many species, no single photo

Equation

As printed (Table 5)

Aboveground 1 74 0.21691 × dbh^2.318391 0.93

In this library's units, ready to compute (kg)

Aboveground biomass, without leaves = 0.21691 * D^2.318391

Fitted by weighted nonlinear regression, so no back-transform correction factor. Leaves were excluded from the biomass.

Source

All 74 33.4 5.3 111.2 21.8 11.6 3.0 25.0 4.9

Fit · Table 2 (dbh and height ranges)

Trees measured: 74
DBH range: 5.3–111.2 cm
Height range: 3–25 m
R²: 0.93
Method: weighted nonlinear regression (SAS PROC MODEL); r2 is pseudo-R2
Where: Miombo woodlands at Mtangatanga, Kongwe, Tsamba and Mua-livulezi, Malawi
Last checked: 2026-11-01

Calculate

DBH (cm)

225

Aboveground biomass, without leaves (kg)

106

Carbon (kg), ×0.47

388

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	225	225	Computed from the printed form hand-computed from the published form
D = 60	2,876	2,876	Computed from the printed form hand-computed from the published form

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