Equations / Aboveground biomass
Oak aboveground biomass from D, additive system 1 (Table 4)
Aboveground biomassQuercus (Q. mongolica and Q. wutaishanica) · FagaceaeChinanaturalRead from the original paper
Fitted on these 2 species: Quercus mongolica, Quercus wutaishanica
Equation
As printed (Table 4, System 1)
Aboveground Wag = 0.050D2.473 + 0.022D2.249 + 0.011D2.772 + 0.019D1.964
In this library's units, ready to compute (kg)
Aboveground biomass = 0.050 * D^2.473 + 0.022 * D^2.249 + 0.011 * D^2.772 + 0.019 * D^1.964D- Diameter at breast height (1.3 m), cm
Fitted on 120 Mongolian oak and 39 Liaodong oak trees (Table 1; D 1.5-33.0 cm). Exponents are printed flattened in the HTML text; read as D^exponent. No R2 recorded (adjusted R2 only). Sum of wood (inside bark), bark, branch and foliage.
Source
doi:10.3390/f12060715 · Open access · copy we read
A total of 159 sample trees consisting of 120 Mongolian oak and 39 Liaodong oak
- Trees measured
- 159
- DBH range
- 1.5–33 cm
- Height range
- 1.4–20.5 m
- Method
- weighted nonlinear seemingly unrelated regression (NSUR), additive system
- Where
- Daxing'anling, Xiaoxing'anling and Changbai mountains, NE China
- Last checked
- 2026-11-02
Calculate
4.9
Aboveground biomass (kg)
2.3
Carbon (kg), ×0.47
8.44
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 = 5, H = 4 | 4.9 | 4.9 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 15, H = 9 | 74.1 | 74.1 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 28, H = 16 | 355 | 355 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
- Six Guanajuato oaks pooled, total aboveground biomass fitted directly (model 3) · Cortés-Sánchez et al. 2019 · DBH + Height
- Six Guanajuato oaks pooled, total aboveground biomass fitted directly (model 4) · Cortés-Sánchez et al. 2019 · Wood density + DBH + Height
- Quercus candicans: total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus coccolobifolia: total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus group 1 (rugosa, candicans, laurina): total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus laurina: total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus obtusata: total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Quercus sideroxyla: total aboveground biomass (sum of components) · Cortés-Sánchez et al. 2019 · DBH + Height
- Oak branch biomass from D, additive system 1 (Table 4) · same paper · Branch biomass
- Oak branch biomass from D and crown width, additive system 2 (Table 4) · same paper · Branch biomass
- Oak foliage biomass from D, additive system 1 (Table 4) · same paper · Foliage biomass
- Oak foliage biomass from D and crown width, additive system 2 (Table 4) · same paper · Foliage biomass
- Oak root biomass from D (Table 3) · same paper · Root biomass