Tree Allometrics

Fagus sylvatica / Foliage biomass

Leaf biomass from diameter (Table II)

Foliage biomassFagus sylvaticaNetherlandsRead from the original paperPeer-reviewed source
Photo of Fagus sylvatica
© Rebecca Gimenez Husted · CC BY · iNaturalist
Equation

As printed (Table II, model below table and Leaves row, p. 43 (rendered page-06).)

Y = c₀ + c₁*dbh^c₂; c₀ = 0.375, c₁ = 0.0024, c₂ = 2.517

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

Foliage biomass = 0.375 + 0.0024 * D^2.517
D
Diameter at breast height (1.3 m), cm

DBH is measured at 1.30 m. The reported R² is adjusted for degrees of freedom. The author cautions against extrapolation, particularly because the two largest trees influenced the leaf and branch fits.

Source
Leaves 0.375 0.0024 0.0021 2.517 0.253 0.906
Equation · Table II, p. 43 (rendered page)
The models are of the form Y = c₀ + c₁*dbhᶜ².
Equation · Table II, p. 43 (rendered page)
leaf biomass
Output · Results, p. 43
Nonlinear models between tree biomass amounts or leaf area (Y: in kg or m²) and dbh (in cm).
Units · Table II, p. 43 (rendered page)
The number of observations is 38.
Trees measured · Table II, p. 43 (rendered page)
Leaves 0.375 0.0024 0.0021 2.517 0.253 0.906
R² · Table II, p. 43 (rendered page)
In the case of nonlinear regression analysis the model was fitted directly by nonlinear least squares.
method · Data analysis, p. 42
beech (Fagus sylvatica L)
Taxon · Title, p. 39
centre of the Netherlands.
Where · Data collection, p. 40
Trees measured
38
R²
0.906
Method
nonlinear least squares
Where
Forest area in the centre of the Netherlands
Last checked
2026-11-05
Calculate
2.56
Foliage biomass (kg)
1.21
Carbon (kg), ×0.47
4.42
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%.

InputsExpectedWe getFrom
D = 152.562.56Computed from the printed form
Computed from Table II; diameter is within the plotted sample.

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