Equations / Root biomass
Oak root biomass from D (Table 3)
Root biomassQuercus (Q. mongolica and Q. wutaishanica) · FagaceaeChinanaturalRead from the original paper
Covers the whole genus
Equation
As printed (Table 3, Root, predictor D (selected: "The equation with D as the only predictor was therefore most suitable for root biomass"))
Root D 0.086*** 2.072***
In this library's units, ready to compute (kg)
Root biomass = 0.086 * D^2.072D- Diameter at breast height (1.3 m), cm
Root coefficients as listed in Table 3 for model W = b0*D^b1 (Table 3 coefficients; Table 3 caption: regression coefficients with weighting function). Root biomass is root plus stump dry biomass (Section 2.2). 53 excavated trees.
Source
doi:10.3390/f12060715 · Open access · copy we read
53 trees with a D spanning 1.5-32.8 cm were selected for root biomass collection
- Trees measured
- 53
- DBH range
- 1.5–32.8 cm
- Method
- weighted nonlinear regression (root equations fitted separately)
- Where
- Daxing'anling, Xiaoxing'anling and Changbai mountains, NE China
- Last checked
- 2026-11-02
Calculate
2.414
Root biomass (kg)
1.135
Carbon (kg), ×0.47
4.16
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 | 2.41 | 2.41 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 15 | 23.5 | 23.5 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 30 | 98.9 | 98.9 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
- Oak root biomass (compatible total-biomass system) · Du et al. 2026 · DBH + Height
- Quercus robur and Q. petraea, Germany, belowground biomass from DBH (Eq. 4, Tab. 1) · Röhling et al. 2019 · DBH
- Quercus canariensis root biomass (Table 2) · Ruiz-Peinado et al. 2012 · DBH
- Quercus faginea root biomass (Table 2) · Ruiz-Peinado et al. 2012 · DBH
- Quercus ilex root biomass (Table 2) · Ruiz-Peinado et al. 2012 · DBH
- Quercus pyrenaica root biomass (Table 2) · Ruiz-Peinado et al. 2012 · DBH
- Quercus suber root biomass (Table 2) · Ruiz-Peinado et al. 2012 · DBH
- Oak aboveground biomass from D, additive system 1 (Table 4) · same paper · Aboveground biomass
- 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