Quercus canariensis / Stem biomass
Quercus canariensis stem with bark biomass (Table 2)
Stem biomassQuercus canariensis · FagaceaeSpainmixedRead from the original paper
© Karim Haddad · CC BY · iNaturalistEquation
As printed (Table 2, Quercus canariensis, Stem row)
Ws = 0.0126 · d² · h
In this library's units, ready to compute (kg)
Stem biomass = 0.0126 * D^2 * HD- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Stem with bark (commercial volume, up to a top diameter of 7 cm); fitted jointly with the branch equations by SUR to keep components additive. Stand type is not stated per species in the paper. Branch equations for this species are not added.
Source
doi:10.5424/fs/2112211-02193 · Open access · copy we read
Quercus canariensis ... 23
Quercus canariensis 10.0 60.0
- Trees measured
- 23
- DBH range
- 10–60 cm
- Height range
- 7.5–19.5 m
- Method
- seemingly unrelated regression with weighting
- Where
- Spain (sample zones per species, Figure 1)
- Last checked
- 2026-11-02
Calculate
Height from
50.4
Stem biomass (kg)
23.7
Carbon (kg), ×0.47
86.9
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 = 20, H = 10 | 50.4 | 50.4 | Computed from the printed form computed from the Table 2 coefficients |
| D = 35, H = 15 | 232 | 232 | Computed from the printed form computed from the Table 2 coefficients |
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