Tree Allometrics

Quercus candicans / Aboveground biomass

Quercus candicans: total aboveground biomass (sum of components)

Aboveground biomassQuercus candicans Née · FagaceaeMexiconaturalRead from the original paper
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Equation

As printed (Table 9, Quercus candicans)

Bt = ΣBi

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

Aboveground biomass = (exp(-4.775313) * D^1.798292 * H^1.570775) + (exp(-3.547008) * D^2.593972) + (exp(-4.752007) * D^2)
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 0.96, branches 0.86, foliage 0.60, total 0.93 (Table 9). Total is the sum of the component equations, as the paper defines it.

Source
Bf = exp (– 4.775313) × Dn^1.798292 × At^1.570775
Equation · Table 9, Quercus candicans
Br = exp (−3.547008) × Dn^2.593972
Equation · Table 9, Quercus candicans
Bh = exp (−4.752007) × Dn²
Equation · Table 9, Quercus candicans
30
Trees measured · Table 1, Q. candicans
Trees measured
30
DBH range
6.6–41.6 cm
Height range
6.09–16.85 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
94.2
Aboveground biomass (kg)
44.3
Carbon (kg), ×0.47
162
CO₂e (kg), ×44/12
Fitted DBH range0100200300400500600700510152025303540DBH (cm)Aboveground biomass (kg)Aboveground 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 = 17.1, H = 9.394.294.2Computed from the printed form
computed from the published form (Table 9)
D = 31.1, H = 13.6469469Computed from the printed form
computed from the published form (Table 9)

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