Fraxinus americana / Aboveground biomass
North American taxa group: Oleaceae ≥ 0.55 spg (Table 5)
Aboveground biomassFraxinus americana · OleaceaeUnited StatesmixedRead from the original paper
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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(-1.8384 + 2.3524 * ln(D))D- Diameter at breast height (1.3 m), cm
Fitted for the Oleaceae ≥ 0.55 spg taxon, which held only white ash equations, so it is recorded as a species fit. Median specific gravity of the group: 0.55. Diameter range is that of the pseudodata. R² is the published 'R²-statistic'.
Source
doi:10.1093/forestry/cpt053 · Open access · copy we read
Oleaceae ≥ 0.55 spg 0.55 −1.8384 2.3524 49 7 dbh 3–55 0.84
Oleaceae F. americana Ash, white 541 0.55 7
we did not include a correction (Baskerville, 1972) for underestimation
- DBH range
- 3–55 cm
- R²
- 0.84
- Method
- Weighted regression of ln(biomass) on ln(dbh) fitted to 49 pseudodata points generated from 7 published equations; no back-transform correction
- Where
- United States (equations compiled from US and Canadian studies)
- Last checked
- 2026-11-03
Calculate
475
Aboveground biomass (kg)
223
Carbon (kg), ×0.47
818
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 | 475 | 475 | Computed from the printed form computed from the published form at dbh = 30 cm |
Related
- Canadian national equation, black ash, dbh and height (sum of wood, bark, branches, foliage; Table 4) · Lambert et al. 2005 · DBH + Height
- Canadian national equation, black ash, dbh only (sum of wood, bark, branches, foliage; Table 3) · Lambert et al. 2005 · DBH
- Canadian national equation, red ash, dbh and height (sum of wood, bark, branches, foliage; Table 4) · Lambert et al. 2005 · DBH + Height
- Canadian national equation, red ash, dbh only (sum of wood, bark, branches, foliage; Table 3) · Lambert et al. 2005 · DBH
- Canadian national equation, white ash, dbh and height (sum of wood, bark, branches, foliage; Table 4) · Lambert et al. 2005 · DBH + Height
- Canadian national equation, white ash, dbh only (sum of wood, bark, branches, foliage; Table 3) · Lambert et al. 2005 · DBH
- NSVB white ash, Warm Continental Division (210): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1) · Westfall et al. 2024 · DBH + Height
- NSVB white ash, species-level (all ecodivisions): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1) · Westfall et al. 2024 · 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