Tree Allometrics

Quercus obtusata / Foliage biomass

Quercus obtusata: foliage (twigs with leaves) biomass

Foliage biomassQuercus obtusata Bonpl. · FagaceaeMexiconaturalRead from the original paper
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Equation

As printed (Table 9, Quercus obtusata)

Bh = exp (– 6.181035) × Dn^2.488617

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

Foliage biomass = exp(-6.181035) * D^2.488617
D
Diameter at breast height (1.3 m), cm

Table 1 sample size and ranges for this species. Adjusted R2 (not stored): stem 0.86, branches 0.84, foliage 0.82, total 0.94 (Table 9).

Source
34
Trees measured · Table 1, Q. obtusata
Trees measured
34
DBH range
6.2–37.6 cm
Height range
4.85–14.2 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
1.93
Foliage biomass (kg)
0.906
Carbon (kg), ×0.47
3.32
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 = 15.61.931.93Computed from the printed form
computed from the published form (Table 9)
D = 28.28.418.41Computed from the printed form
computed from the published form (Table 9)

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