Tree Allometrics

Larix gmelinii / Branch biomass

Dahurian larch branch biomass from D only (MS-2) (Table 5)

Branch biomassLarix gmelinii · PinaceaeChinanaturalRead from the original paper
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Equation

As printed (Table 5 (MS-2), Dahurian larch, branch row; model form Eq. (14) structure)

Wb = e^β30 · D^β31; Dahurian larch | Branch | -3.4568 | 2.0135

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

Branch biomass = exp(-3.4568 + 2.0135 * ln(D))
D
Diameter at breast height (1.3 m), cm

Dahurian larch, additive system MS-2 (Table 5); W = exp(b0) * D^b1 (Eqs. 16 form per Table caption). Ranges and n from Table 2. The b0 column is the exponent of e (W = e^b0 ...), as in Eq. (14). Stem includes bark. Root excludes fine roots <5 mm. No R2 recorded (adjusted R2 only).

Source
138 Dahurian larch trees and 108 white birch trees were destructively sampled
Trees measured · Section 2.2
Trees measured
138
DBH range
1.7–28.4 cm
Height range
2.4–21.9 m
Method
seemingly unrelated regression (SUR), additive system, W = exp(b0) D^b1 H^b2
Where
Eastern Daxing'an Mountains, Heilongjiang, northeast China
Last checked
2026-11-02
Calculate
0.514
Branch biomass (kg)
0.242
Carbon (kg), ×0.47
0.886
CO₂e (kg), ×44/12
Fitted DBH range0102030405060510152025303540DBH (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 = 40.5140.514Computed from the printed form
computed from the published form (coefficients as printed)
D = 103.253.25Computed from the printed form
computed from the published form (coefficients as printed)
D = 1810.610.6Computed from the printed form
computed from the published form (coefficients as printed)

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