Tree Allometrics

Pinus lumholtzii / Branch biomass

Pinus lumholtzii branch biomass (wood and bark)

Branch biomassPinus lumholtzii · PinaceaeMexiconaturalRead from the original paper
Photo of Pinus lumholtzii
© M. Socorro González Elizondo · CC BY-SA · iNaturalist
Equation

As printed (Table 2, p. 12)

0.03461d2.1666

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

Branch biomass = 0.03461 * D^2.1666
D
Diameter at breast height (1.3 m), cm

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 0.83 (cross-validation)
R² · Table 2, p. 12
(35)
Trees measured · Table 1
Trees measured
35
DBH range
5–42 cm
Height range
3.6–24.9 m
R²
0.83
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
22.8
Branch biomass (kg)
10.7
Carbon (kg), ×0.47
39.3
CO₂e (kg), ×44/12
Fitted DBH range020406080100120510152025303540DBH (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 = 2022.822.8Computed from the printed form
computed from the Table 2 equation
D = 3576.776.7Computed from the printed form
computed from the Table 2 equation

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