Tree Allometrics

Olea europaea / Aboveground biomass

Olea europaea AGB from stump diameter DSH (M20)

Aboveground biomassOlea europaea subsp. cuspidata · OleaceaeEthiopianaturalRead from the original paper
Photo of Olea europaea subsp. cuspidata
viridian · CC0 · iNaturalist
Equation

As printed (Table 4 (a, b, adj-R2, rRMSE, rBias, AIC))

M20 Olea europaea 16 AGB = a × DSHb 0.125 2.279 0.948 44.7 3.1 16.3

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

Aboveground biomass = 0.125 * D30^2.279
D30
Stem diameter at 30 cm, cm

DSH at 0.3 m mapped to D30. Best species-specific model for Olea europaea from stump diameter. Adjusted R2 0.948. The fits were done on ln-transformed data and the paper says predictions were back-transformed with a correction factor (CF from RSE) for its error statistics, but it does not print the CF or say whether the tabulated a already includes it; no cf is entered. Adjusted R2 is given in the notes, not fit.r2, because it is adjusted.

Source
Trees measured
16
Method
Power function fitted on ln-transformed data
Where
Desa'a dry Afromontane forest, Tigray
Last checked
2026-11-02
Calculate
23.8
Aboveground biomass (kg)
11.2
Carbon (kg), ×0.47
41
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%.

InputsExpectedWe getFrom
D30 = 1023.823.8Computed from the printed form
computed from the published form
D30 = 25192192Computed from the printed form
computed from the published form

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