Tree Allometrics

Larix gmelinii / Stem biomass

Dahurian larch stem biomass from D and H (MS-3) (Table 6)

Stem biomassLarix gmelinii · PinaceaeChinanaturalRead from the original paper
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Equation

As printed (Table 6 (MS-3), Dahurian larch, stem row; model form Eq. (14) structure)

Ws = e^β20 · D^β21 · H^β22; Dahurian larch | Stem | -3.7411 | 1.8314 | 1.0978

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

Stem biomass = exp(-3.7411 + 1.8314 * ln(D) + 1.0978 * ln(H))
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Dahurian larch, additive system MS-3 (Table 6); W = exp(b0) * D^b1 * H^b2 (Eqs. 17 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
Height from
1.76
Stem biomass (kg)
0.827
Carbon (kg), ×0.47
3.03
CO₂e (kg), ×44/12
Fitted DBH range020406080100120510152025303540DBH (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 = 4, H = 51.761.76Computed from the printed form
computed from the published form (coefficients as printed)
D = 10, H = 1122.422.4Computed from the printed form
computed from the published form (coefficients as printed)
D = 18, H = 17106106Computed from the printed form
computed from the published form (coefficients as printed)

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