Tree Allometrics

Pinus caribaea / Foliage biomass

Pinus caribaea needle biomass from DBH and height (simultaneous fit)

Foliage biomassPinus caribaea var. hondurensis · PinaceaeBrazilplantationRead from the original paper
Photo of Pinus caribaea var. hondurensis
© Ben Machado · CC BY · iNaturalist
Equation

As printed (Table 5)

bsneedles = β0+β1DBH+β2TH: -1.943, 0.160, 0.087

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

Foliage biomass = -1.943 + 0.160*D + 0.087*H
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Ten-year-old plantation, 3 m x 3 m spacing, 20 trees. Linear form; can go negative for small trees. Fitted simultaneously with the branch and trunk models (Table 5).

Source
Twenty (20) trees from the experimental area of the State University of Southwest Bahia (UESB), Vitória da Conquista, Bahia, Brazil, were measured and weighed
Trees measured · Abstract
with a minimum value of 8.20 cm and a maximum of 23.70 cm; average total height of 11.06 m, ranging from 6.40 m to 14.20 m
Smallest DBH · Section 3 (Results)
R2adj 0.53
R² · Table 5
Trees measured
20
DBH range
8.2–23.7 cm
Height range
6.4–14.2 m
R²
0.53
Method
Simultaneous (SUR) linear regression ensuring additivity; R2 reported is adjusted R2
Where
Experimental area of UESB, Vitória da Conquista, Bahia
Last checked
2026-11-02
Calculate
Height from
0.76
Foliage biomass (kg)
0.357
Carbon (kg), ×0.47
1.31
CO₂e (kg), ×44/12
Fitted DBH range0123456510152025303540DBH (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 = 12, H = 90.760.76Computed from the printed form
computed from the published form
D = 20, H = 132.392.39Computed from the printed form
computed from the published form

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