Equations / Aboveground biomass
North American taxa group: Pinus < 0.45 spg (Table 5)
Fitted on these 11 species and others the paper does not name here: Pinus albicaulis, Pinus arizonica, Pinus banksiana, Pinus contorta, Pinus jeffreyi, Pinus lambertiana, Pinus leiophylla, Pinus monticola, Pinus ponderosa, Pinus resinosa, Pinus strobus
As printed (Table 5 caption, p. 140)
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.6177 + 2.4638 * ln(D))D- Diameter at breast height (1.3 m), cm
All pines outside the southern high-specific-gravity group, east and west. The group also took one 'Pinus spp.' (ponderosa–lodgepole–sugar) equation. Median specific gravity of the group: 0.39. Diameter range is that of the pseudodata. R² is the published 'R²-statistic'.
doi:10.1093/forestry/cpt053 · Open access · copy we read
Pinus < 0.45 spg 0.39 −2.6177 2.4638 561 70 dbh 3–180 0.83
P. ponderosa Pine, ponderosa 122 0.38 9
we did not include a correction (Baskerville, 1972) for underestimation
- DBH range
- 3–180 cm
- R²
- 0.83
- Method
- Weighted regression of ln(biomass) on ln(dbh) fitted to 561 pseudodata points generated from 70 published equations; no back-transform correction
- Where
- United States (equations compiled from US and Canadian studies)
- Last checked
- 2026-11-03
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
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 | 318 | 318 | Computed from the printed form computed from the published form at dbh = 30 cm |
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