Tree Allometrics

Quercus sideroxyla / Branch biomass

Quercus sideroxyla branch biomass (wood and bark)

Branch biomassQuercus sideroxyla · FagaceaeMexiconaturalRead from the original paper
No openly licensed photo yet
Equation

As printed (Table 2, p. 12)

0.005154d1.92033h1.06618

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

Branch biomass = 0.005154 * D^1.92033 * H^1.06618
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.

Source
branches (including both wood and bark)
Output · Section 2.2
R2 0.80 (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
0.8
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
23
Branch biomass (kg)
10.8
Carbon (kg), ×0.47
39.6
CO₂e (kg), ×44/12
Fitted DBH range020406080100510152025303540DBH (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 = 20, H = 122323Computed from the printed form
computed from the Table 2 equation
D = 35, H = 18104104Computed from the printed form
computed from the Table 2 equation

Report a problem with this equation · JSON

Related

Compare these curves