Tree Allometrics

Equations / Foliage biomass

Pinus douglasiana and Pinus michoacana foliage biomass

Foliage biomassPinus douglasiana and Pinus michoacana (data combined) · PinaceaeMexiconaturalRead from the original paper
Many species, no single photo
Equation

As printed (Table 2, p. 12)

0.01168d2.148631

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

Foliage biomass = 0.01168 * D^2.148631
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. Data of the two species were combined by the authors; fit ranges not printed for the combined set.

Source
foliage (needles/leaves)
Output · Section 2.2
R2 0.83 (cross-validation)
R² · Table 2, p. 12
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
7.292
Foliage biomass (kg)
3.427
Carbon (kg), ×0.47
12.57
CO₂e (kg), ×44/12
05101520253035510152025303540DBH (cm)Foliage biomass (kg)Foliage 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 = 207.297.29Computed from the printed form
computed from the Table 2 equation
D = 3524.324.3Computed from the printed form
computed from the Table 2 equation

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