Larix czekanowskii / Stem volume
Chekanovsky larch stem volume from D and H, weighted (Table 2, selected)
Stem volumeLarix czekanowskii · PinaceaeMongolianaturalRead from the original paper
No openly licensed photo yet
Equation
As printed (Хүснэгт 2 (Table 2), Larix czekanowskii, p. 122)
W lnŶ = lna + b × lnD + c × lnH -11.416 0.903 2.900 CF 1.000
In this library's units, ready to compute (m³)
Stem volume = exp(-11.416 + 0.903 * ln(D) + 2.9 * ln(H))D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Paper is in Mongolian; table values quoted as printed. Weighted (W) regression row; printed CF 1.000, so no correction applies. Adjusted R² and RMSE are in the table but are not stored (adjusted R², and RMSE on the log or weighted scale). Stem volume (m3) from Smalian sections. Natural log assumed from the paper's ln notation.
Source
doi:10.5564/mjb.v4i30.2588 · Open access · copy we read
ŷ = exp(lnŷ)CF; CF=exp(S²/2)
Чекановскийн шинэсэн ойгоос авсан 10 шинэс модны ... диаметр 18.6 (5.3-40.0) см, өндөр 10.9 (4.6-19.2) м
- Trees measured
- 10
- DBH range
- 5.3–40 cm
- Height range
- 4.6–19.2 m
- Correction factor
- 1 (applied)
- Method
- log-log regression, weighted
- Where
- Bayangol, Norovlin sum, Khentii, Mongolia (Eree Nuruu)
- Last checked
- 2026-11-02
Calculate
Height from
0.173
Stem volume (m³)
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 = 11 | 0.173 | 0.173 | Computed from the printed form computed from the Table 2 coefficients and the printed back-transform y = exp(lny) x CF (eq. 8) |
| D = 35, H = 16 | 0.848 | 0.848 | Computed from the printed form computed from the Table 2 coefficients and the printed back-transform y = exp(lny) x CF (eq. 8) |
Related
- Gmelin larch stem volume from D²H, unweighted (Table 2, selected) · Altanzagas et al. 2022 · DBH + Height
- Chekanovsky larch AGB from DBH only, unweighted (Table 3) · same paper · Aboveground biomass
- Chekanovsky larch AGB from DBH only, weighted (Table 3) · same paper · Aboveground biomass
- Chekanovsky larch AGB from D²H, unweighted (Table 3) · same paper · Aboveground biomass
- Chekanovsky larch AGB from D²H, weighted (Table 3) · same paper · Aboveground biomass
- Chekanovsky larch AGB from D and H, weighted (Table 3) · same paper · Aboveground biomass
- Gmelin larch AGB from DBH only, unweighted (Table 3) · same paper · Aboveground biomass
- Gmelin larch AGB from DBH only, weighted (Table 3) · same paper · Aboveground biomass
- Gmelin larch AGB from D²H, unweighted (Table 3) · same paper · Aboveground biomass