Equations / Aboveground biomass

Pinus lumholtzii total aboveground biomass

Aboveground biomassPinus lumholtzii · PinaceaeMexiconaturalRead from the original paper

Equation

As printed (Table 2, p. 12)

Wt = ΣWi

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

Aboveground biomass = (0.078527 * D^2.5043) + (0.022809 * D^1.93859) + (0.03461 * D^2.1666) + (0.011642 * D^2.16799)

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. 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

Vargas-Larreta, B., López-Sánchez, C.A., Corral-Rivas, J.J., et al. (2017). Allometric Equations for Estimating Biomass and Carbon Stocks in the Temperate Forests of North-Western Mexico. Forests, 8(8), 269.

doi:10.3390/f8080269 · Open access · copy we read

0.078527d2.5043

Equation · Table 2, p. 12

0.022809d1.93859

Equation · Table 2, p. 12

0.03461d2.1666

Equation · Table 2, p. 12

0.011642d2.16799

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 0.90 (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: 0.9
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

DBH (cm)

180.4

Aboveground biomass (kg)

84.78

Carbon (kg), ×0.47

310.9

CO₂e (kg), ×44/12

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%.

Inputs	Expected	We get	From
D = 20	180.4	180.4	Computed from the printed form computed from the Table 2 equations (sum of the four components)
D = 35	702.9	702.9	Computed from the printed form computed from the Table 2 equations (sum of the four components)

Report a problem with this equation · JSON

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Pinus lumholtzii total aboveground biomass

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