Equations / Aboveground biomass
North American taxa group: Aceraceae < 0.50 spg (Table 5)
Aboveground biomassAceraceae < 0.50 spg (Acer macrophyllum, A. pensylvanicum, A. rubrum, A. saccharinum, A. spicatum) · SapindaceaeUnited StatesmixedRead from the original paper
Fitted on these 5 species: Acer macrophyllum, Acer pensylvanicum, Acer rubrum, Acer saccharinum, Acer spicatum
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(-2.047 + 2.3852 * ln(D))D- Diameter at breast height (1.3 m), cm
The paper's Aceraceae (maples, now in Sapindaceae): bigleaf, striped, red, silver and mountain maple. Median specific gravity of the group: 0.44. Diameter range is that of the pseudodata. R² is the published 'R²-statistic'.
Source
doi:10.1093/forestry/cpt053 · Open access · copy we read
Aceraceae < 0.50 spg* 0.44 −2.0470 2.3852 243 43 dbh 3–66 0.84
Aceraceae Acer macrophyllum Maple, bigleaf 312 0.44
we did not include a correction (Baskerville, 1972) for underestimation
- DBH range
- 3–66 cm
- R²
- 0.84
- Method
- Weighted regression of ln(biomass) on ln(dbh) fitted to 243 pseudodata points generated from 43 published equations; no back-transform correction
- Where
- United States (equations compiled from US and Canadian studies)
- Last checked
- 2026-11-03
Calculate
431
Aboveground biomass (kg)
202
Carbon (kg), ×0.47
742
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 | 431 | 431 | Computed from the printed form computed from the published form at dbh = 30 cm |
Related
- 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: Betulaceae 0.40–0.49 spg (Table 5) · same paper · Aboveground biomass
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