Tree Allometrics

Quercus sideroxyla / Aboveground biomass

Quercus sideroxyla total aboveground biomass

Aboveground biomassQuercus sideroxyla · FagaceaeMexiconaturalRead from the original paper
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Equation

As printed (Table 2, p. 12)

Wt = ΣWi

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

Aboveground biomass = (0.033462 * D^1.739234 * H^1.111268) + (0.03022 * D^1.66927 * H^0.80238) + (0.005154 * D^1.92033 * H^1.06618) + (0.00092 * D^1.57684 * H^1.34236)
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Equation as printed in the Table 2 system for this taxon; d is DBH in cm, h total height in m, output in kg dry mass. R² is the 10-fold cross-validation value. Total AGB is printed as Wt = sum of the four components (stem wood, stem bark, branches, foliage); the expression is that sum of the four printed equations.

Source
0.033462d1.739234h1.111268
Equation · Table 2, p. 12
0.03022d1.66927h0.80238
Equation · Table 2, p. 12
0.005154d1.92033h1.06618
Equation · Table 2, p. 12
0.00092d1.57684h1.34236
Equation · Table 2, p. 12
Wt is the total tree AGB (i.e., the sum of all the tree biomass components)
Output · Section 2.3.1
R2 0.92 (cross-validation)
R² · Table 2, p. 12
(123)
Trees measured · Table 1
Trees measured
123
DBH range
11–57 cm
Height range
6.3–24.8 m
R²
0.92
Method
Power-law component equations fitted simultaneously by generalized method of moments (additive system)
Where
Durango, Sierra Madre Occidental
Last checked
2026-11-02
Calculate
Height from
156
Aboveground biomass (kg)
73.2
Carbon (kg), ×0.47
268
CO₂e (kg), ×44/12
Fitted DBH range0100200300400500600510152025303540DBH (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 = 20, H = 12156156Computed from the printed form
computed from the Table 2 equations (sum of the four components)
D = 35, H = 18635635Computed from the printed form
computed from the Table 2 equations (sum of the four components)

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