Acer saccharum / Foliage biomass
Canadian national equation, sugar maple, dbh and height (foliage; Table 4)
Kent P. McFarland · CC0 · iNaturalistAs printed (Eq. 3)
In this library's units, ready to compute (kg)
Foliage biomass = 2.5019 * D^2.4527 * H^(-2.3008)D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Foliage is leaves and twigs. r2 is the adjusted R² (AdjRSq) of this compartment in Table 5. Fitted on the original scale (weighted nonlinear seemingly unrelated regression), so there is no back-transform correction. Dead branches, cones and fruits are not part of aboveground biomass in this work (Materials). Stand type was not always recorded. Ung, Bernier & Guo (2008) later revised parameters for some species with British Columbia data; not used here.
doi:10.1139/x05-112 · Paywalled · copy we read
bfoliage1 2.5019
bfoliage2 2.4527
bfoliage3 –2.3008
Sugar maple 235 24.6±0.9 17.3±0.3 466.9±30.7
(2.0;57.8) (2.6;26.4) (1.6;2421.1)
Foliage 0.0025 0.77 4.5 2.63 0.0076 0.65 5.5 2.49
- Trees measured
- 235
- DBH range
- 2–57.8 cm
- Height range
- 2.6–26.4 m
- R²
- 0.65
- Method
- Nonlinear seemingly unrelated regression with weight functions; additivity constrained so compartments sum to total
- Where
- Ontario and Quebec, Canada (ENFOR archival data, early 1980s)
- 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 = 20, H = 15 | 7.64 | 7.64 | Computed from the printed form computed from the published form at dbh = 20 cm, H = 15 m |
Related
- Canadian national equation, red maple, dbh and height (foliage; Table 4) · Lambert et al. 2005 · DBH
- Canadian national equation, red maple, dbh only (foliage; Table 3) · Lambert et al. 2005 · DBH
- Canadian national equation, silver maple, dbh and height (foliage; Table 4) · Lambert et al. 2005 · DBH + Height
- Canadian national equation, silver maple, dbh only (foliage; Table 3) · Lambert et al. 2005 · DBH
- Canadian national equation, sugar maple, dbh only (foliage; Table 3) · Lambert et al. 2005 · DBH
- Sugar maple leaf biomass from DBH, managed stand (sugar bush) · Ter-Mikaelian & Lautenschlager 2001 · DBH
- Sugar maple leaf biomass from DBH, unmanaged stand · Ter-Mikaelian & Lautenschlager 2001 · DBH
- NSVB bigleaf maple, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1) · Westfall et al. 2024 · DBH + Height
- Canadian national equation, alpine fir, dbh only (branches; Table 3) · same paper · Branch biomass
- Canadian national equation, alpine fir, dbh and height (branches; Table 4) · same paper · Branch biomass
- Canadian national equation, alpine fir, dbh and height (foliage; Table 4) · same paper · Foliage biomass
- Canadian national equation, alpine fir, dbh and height (stem wood plus stem bark; Table 4) · same paper · Stem biomass
- Canadian national equation, alpine fir, dbh and height (sum of wood, bark, branches, foliage; Table 4) · same paper · Aboveground biomass
- Canadian national equation, alpine fir, dbh only (foliage; Table 3) · same paper · Foliage biomass
- Canadian national equation, alpine fir, dbh only (stem wood plus stem bark; Table 3) · same paper · Stem biomass
- Canadian national equation, alpine fir, dbh only (sum of wood, bark, branches, foliage; Table 3) · same paper · Aboveground biomass