Tree Allometrics

Larix cajanderi / Stem biomass

Larix cajanderi, Ust-Yansky district, stem (wood plus bark) biomass from DBH (Table 5)

Stem biomassLarix cajanderi · PinaceaeRussianaturalRead from the original paper
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Equation

As printed (Table 5)

Ust-Yansky district Stem 1.8–18.9 20 0.128 0.013 2.227 0.059 5.568; Y = a × DBH^b, Y in kg dry weight, DBH in cm

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

Stem biomass = 0.128 * D^2.227
D
Diameter at breast height (1.3 m), cm

Coefficients as printed in Table 5 (3 decimals); no log back-transform because fitted by weighted nonlinear regression. 'Stem' is the stem row (the table also lists stem wood and stem bark separately; the contract has no output for those).

Source
20 trees, DBH range 1.8–18.9 cm
Trees measured · Table 5, Number of trees and DBH range columns
Trees measured
20
DBH range
1.8–18.9 cm
Method
weighted nonlinear least squares power function, weights DBH^(-2c)
Where
Ust-Yansky district, Republic of Sakha, Russia (site-specific, Larix cajanderi stands)
Last checked
2026-11-02
Calculate
1.48
Stem biomass (kg)
0.695
Carbon (kg), ×0.47
2.55
CO₂e (kg), ×44/12
Fitted DBH range0100200300400500510152025303540DBH (cm)Stem biomass (kg)Stem 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 = 31.481.48Computed from the printed form
hand-computed from the published form
D = 813.113.1Computed from the printed form
hand-computed from the published form
D = 1553.353.3Computed from the printed form
hand-computed from the published form

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