Tree Allometrics

Equations / Foliage biomass

Quercus group 1 (rugosa, candicans, laurina): foliage (twigs with leaves) biomass

Foliage biomassQuercus group 1 (Q. rugosa, Q. candicans, Q. laurina) · FagaceaeMexiconaturalRead from the original paper

Fitted on these 3 species: Quercus rugosa, Quercus candicans, Quercus laurina

3 of the 3 species it was fitted on · iNaturalist photos, hover for credit
Equation

As printed (Table 8, Grupo 1)

Bh = 0.005943 × Dn^2.23940

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

Foliage biomass = 0.005943 * D^2.2394
D
Diameter at breast height (1.3 m), cm

Group sample size not stated; D and H ranges are the union of the three species' Table 1 ranges. Adjusted R2 (not stored): stem 0.98, branches 0.85, foliage 0.80, total 0.96 (Table 8).

Source
DBH range
5.8–48.6 cm
Height range
4.35–20.6 m
Method
Additive system of component equations fitted simultaneously (iterated seemingly unrelated regression)
Where
Sierra de Santa Rosa, Guanajuato (bosques de encino)
Last checked
2026-11-02
Calculate
4.14
Foliage biomass (kg)
1.95
Carbon (kg), ×0.47
7.13
CO₂e (kg), ×44/12
Fitted DBH range0510152025510152025303540DBH (cm)Foliage biomass (kg)Foliage biomass

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 = 18.64.144.14Computed from the printed form
computed from the published form (Table 8)
D = 35.817.917.9Computed from the printed form
computed from the published form (Table 8)

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