Tree Allometrics

Quercus laurina / Branch biomass

Quercus laurina: branch biomass

Branch biomassQuercus laurina Bonpl. · FagaceaeMexiconaturalRead from the original paper
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Equation

As printed (Table 9, Quercus laurina)

Br = exp (– 6.893717) × (Dn² × At)^1.247303

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

Branch biomass = exp(-6.893717) * (D^2 * H)^1.247303
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Table 1 sample size and ranges for this species. Adjusted R2 (not stored): stem 0.98, branches 0.94, foliage 0.92, total 0.98 (Table 9).

Source
30
Trees measured · Table 1, Q. laurina
Trees measured
30
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
Height from
23.7
Branch biomass (kg)
11.1
Carbon (kg), ×0.47
40.9
CO₂e (kg), ×44/12
Fitted DBH range050100150200510152025303540DBH (cm)Branch biomass (kg)Branch 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 = 18.6, H = 9.223.723.7Computed from the printed form
computed from the published form (Table 9)
D = 35.8, H = 15.7237237Computed from the printed form
computed from the published form (Table 9)

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