Larix olgensis / Foliage biomass

Larch foliage biomass from DBH and height, AMS2

Foliage biomassLarix olgensis · PinaceaeChinaplantationRead from the original paper

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Equation

As printed (Table 3, AMS2, DBH and H)

Foliage −2.1882 0.1858 1.9121 0.1323 −0.7330 0.1613

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

Foliage biomass = exp(-2.1882) * D^1.9121 * H^-0.733

D: Diameter at breast height (1.3 m), cm
H: Total tree height, m

Component equation of the AMS2 system. Additive AMS2 system (aggregated, no constraint) fitted by weighted nonlinear seemingly unrelated regression, the system the authors recommend over the base model when no subsample is available for random effects. Biomass models are exp(b0) * DBH^b1 [* H^b2] with no back-transform factor (nonlinear fit). The paper also gives base model, mixed-effects, AMS1, DMS1 and DMS2 parameters (Tables 2-4), not added here.

Source

Dong, L., Zhang, Y., Zhang, Z., Xie, L., & Li, F. (2020). Comparison of Tree Biomass Modeling Approaches for Larch (Larix olgensis Henry) Trees in Northeast China. Forests, 11(2), 202.

doi:10.3390/f11020202 · Open access · copy we read

the dataset consisted of measurements on 229 larch trees using destructive biomass sampling

Trees measured · Section 2.1

DBH (cm) 229 2.0 35.7 17.9 6.9

Smallest DBH · Table 1

H (m) 229 3.8 27.0 16.8 5.4

h min m · Table 1

R2 0.7202 (AMS2, DBH and H, foliage column)

R² · Table 5, AMS2

Trees measured: 229
DBH range: 2–35.7 cm
Height range: 3.8–27 m
R²: 0.7202
Method: weighted NSUR (AMS2)
Where: Heilongjiang Province, Northeast China (40 plots, 10 sites)
Last checked: 2026-11-02

Calculate

DBH (cm)Height (m)

Height from

1.83

Foliage biomass (kg)

0.86

Carbon (kg), ×0.47

3.15

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 = 10, H = 9	1.83	1.83	Computed from the printed form hand-computed from the published form
D = 25, H = 20	5.88	5.88	Computed from the printed form hand-computed from the published form

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Larix cajanderi, Magadan Oblast, foliage biomass from DBH (Table 5) · Delcourt & Veraverbeke 2022 · DBH
Larix cajanderi, Ust-Yansky district, foliage biomass from DBH (Table 5) · Delcourt & Veraverbeke 2022 · DBH
Larch (Larix gmelinii) foliage biomass from D only (System 1, Table 4) · Dong et al. 2016 · DBH
Larch (Larix gmelinii) foliage biomass from D and H (System 2, Table 4) · Dong et al. 2016 · DBH + Height
Dahurian larch foliage biomass from D only (MS-2) (Table 5) · Dong et al. 2018 · DBH
Dahurian larch foliage biomass from D and H (MS-3) (Table 6) · Dong et al. 2018 · DBH + Height
Natural larch leaf (foliage) biomass from dbh (Table 5, with CF) · Meng et al. 2019 · DBH
Larch aboveground biomass from DBH and height, AMS2 (stem + branch + foliage) · same paper · Aboveground biomass
Larch aboveground biomass from DBH, AMS2 (stem + branch + foliage) · same paper · Aboveground biomass
Larch branch biomass from DBH and height, AMS2 · same paper · Branch biomass
Larch stem biomass from DBH and height, AMS2 · same paper · Stem biomass

Compare these curves

Larch foliage biomass from DBH and height, AMS2

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