Equations / Aboveground biomass
North American taxa group: Cupressaceae ≥ 0.40 spg (Table 5)
Aboveground biomassCupressaceae ≥ 0.40 spg (Chamaecyparis nootkatensis, Juniperus virginiana) · CupressaceaeUnited StatesmixedRead from the original paper
Fitted on these 2 species: Chamaecyparis nootkatensis, Juniperus virginiana
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(-2.6327 + 2.4757 * ln(D))D- Diameter at breast height (1.3 m), cm
Alaska yellow-cedar and eastern redcedar. Median specific gravity of the group: 0.43. Diameter range is that of the pseudodata. R² is the published 'R²-statistic'.
Source
doi:10.1093/forestry/cpt053 · Open access · copy we read
Cupressaceae ≥ 0.40 spg 0.43 −2.6327 2.4757 55 6 dbh 3–109 0.76
Juniperus virginiana Juniper, eastern redcedar 68 0.44 4
we did not include a correction (Baskerville, 1972) for underestimation
- DBH range
- 3–109 cm
- R²
- 0.76
- Method
- Weighted regression of ln(biomass) on ln(dbh) fitted to 55 pseudodata points generated from 6 published equations; no back-transform correction
- Where
- United States (equations compiled from US and Canadian studies)
- Last checked
- 2026-11-03
Calculate
326
Aboveground biomass (kg)
153
Carbon (kg), ×0.47
562
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 | 326 | 326 | Computed from the printed form computed from the published form at dbh = 30 cm |
Related
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- 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