Faidherbia albida / Aboveground biomass

Faidherbia albida in parklands, stump-height diameter (M2)

Aboveground biomassFaidherbia albida · FabaceaeEthiopiaagroforestryRead from the original paper

Equation

As printed (Table 4, M2)

Ln (TAGB) = a0 + a1 ln (DSH) ... −2.79 2.22 ... CF 1.06 ... 0.86

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

Aboveground biomass = 1.06 * exp(-2.79 + 2.22 * ln(D30))

DSH is diameter at stump height, 0.30 m, mapped to D30 (range 8.7-38.8 cm, Table 3).

Source

DSH 8.7–38.8

Fit · Table 3

Trees measured: 35
R²: 0.86
Correction factor: 1.06 (applied)
Method: OLS on ln-transformed data, adjusted R2
Where: Parklands of Kilte Awlaelo, Hawzen and Ganta-Afeshum districts, eastern Tigray, Ethiopia (about 1850-2610 m)
Last checked: 2026-11-01

Calculate

D30 (cm)

50.3

Aboveground biomass (kg)

23.7

Carbon (kg), ×0.47

86.8

CO₂e (kg), ×44/12

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
D30 = 20	50.3	50.3	Computed from the printed form hand-computed from the published form
D30 = 35	174	174	Computed from the printed form hand-computed from the published form

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