Equations / Aboveground biomass
North American taxa group: Larix (Table 5)
Aboveground biomassLarix (Larix laricina, L. occidentalis, L. spp.) · PinaceaeUnited StatesmixedRead from the original paper
Fitted on these 2 species and others the paper does not name here: Larix laricina, Larix occidentalis
Equation
As printed (Table 5 caption, p. 140)
ln(biomass) = β0 + β1 ln(diameter)
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.3012 + 2.3853 * ln(D))D- Diameter at breast height (1.3 m), cm
Tamarack and western larch, plus one equation for introduced larches ('L. spp.'). Median specific gravity of the group: 0.49. Diameter range is that of the pseudodata. R² is the published 'R²-statistic'.
Source
doi:10.1093/forestry/cpt053 · Open access · copy we read
Larix 0.49 −2.3012 2.3853 84 11 dbh 3–98 0.85
Larix laricina Tamarack 71 0.49 6
we did not include a correction (Baskerville, 1972) for underestimation
- DBH range
- 3–98 cm
- R²
- 0.85
- Method
- Weighted regression of ln(biomass) on ln(dbh) fitted to 84 pseudodata points generated from 11 published equations; no back-transform correction
- Where
- United States (equations compiled from US and Canadian studies)
- Last checked
- 2026-11-03
Calculate
334
Aboveground biomass (kg)
157
Carbon (kg), ×0.47
576
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 = 30 | 334 | 334 | Computed from the printed form computed from the published form at dbh = 30 cm |
Related
- Chekanovsky larch AGB from DBH only, unweighted (Table 3) · Altanzagas et al. 2022 · DBH
- Chekanovsky larch AGB from DBH only, weighted (Table 3) · Altanzagas et al. 2022 · DBH
- Chekanovsky larch AGB from D²H, unweighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Chekanovsky larch AGB from D²H, weighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Chekanovsky larch AGB from D and H, weighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Gmelin larch AGB from DBH only, unweighted (Table 3) · Altanzagas et al. 2022 · DBH
- Gmelin larch AGB from DBH only, weighted (Table 3) · Altanzagas et al. 2022 · DBH
- Gmelin larch AGB from D²H, unweighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- North American taxa group: Abies ≥ 0.35 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Abies < 0.35 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Aceraceae ≥ 0.50 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Aceraceae < 0.50 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Betulaceae 0.40–0.49 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Betulaceae 0.50–0.59 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Betulaceae ≥ 0.60 spg (Table 5) · same paper · Aboveground biomass
- North American taxa group: Betulaceae < 0.40 spg (Table 5) · same paper · Aboveground biomass