Equations / Stem biomass
Six Guanajuato oaks pooled, system 2 (wood density, D and H): stem biomass
Fitted on these 6 species: Quercus rugosa, Quercus obtusata, Quercus sideroxyla, Quercus coccolobifolia, Quercus laurina, Quercus candicans
As printed (Table 5, model 4)
In this library's units, ready to compute (kg)
Stem biomass = 0.00676 * (rho * D^2 * H)^1.155141rho- Wood density (oven-dry mass / green volume), g/cm³
D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Dn and At are diameter at breast height and total height (At measured after felling, stump height included). Adjusted R2 (not stored): stem 0.9255, branches 0.7462 (Table 5). Wood density rho is oven-dry mass at 70 °C over green volume per the paper (g cm–3); pooled range 0.60 to 0.83 (Table 1). Foliage and total of this system not added (see source notes).
doi:10.21829/myb.2019.2521799 · Open access · copy we read
Un total de 165 árboles
- Trees measured
- 165
- DBH range
- 4.8–48.6 cm
- Height range
- 3.55–20.6 m
- Method
- Additive system of component equations fitted simultaneously (iterated seemingly unrelated regression)
- Where
- Sierra de Santa Rosa, Guanajuato (bosques de encino)
- Last checked
- 2026-11-02
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 = 17.9, H = 8.7, rho = 0.7 | 42.7 | 42.7 | Computed from the printed form computed from the published form (Table 5) |
| D = 35.5, H = 15.5, rho = 0.8 | 473 | 473 | Computed from the printed form computed from the published form (Table 5) |
Related
- Quercus candicans: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus coccolobifolia: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus group 1 (rugosa, candicans, laurina): stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus group 2 (obtusata, coccolobifolia, sideroxyla): stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus laurina: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus obtusata: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus rugosa: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus sideroxyla: stem biomass · Cortés-Sánchez et al. 2019 · DBH + Height
- Six Guanajuato oaks pooled, total aboveground biomass fitted directly (model 3) · same paper · Aboveground biomass
- Six Guanajuato oaks pooled, total aboveground biomass fitted directly (model 4) · same paper · Aboveground biomass
- Quercus candicans: total aboveground biomass (sum of components) · same paper · Aboveground biomass
- Quercus candicans: branch biomass · same paper · Branch biomass
- Quercus candicans: foliage (twigs with leaves) biomass · same paper · Foliage biomass
- Quercus candicans: stem biomass · same paper · Stem biomass
- Quercus coccolobifolia: total aboveground biomass (sum of components) · same paper · Aboveground biomass
- Quercus coccolobifolia: branch biomass · same paper · Branch biomass