Equations / Aboveground biomass
Dahurian larch aboveground biomass from D only (MS-2) (sum of components, Table 5)
Aboveground biomassLarix gmelinii · PinaceaeChinanaturalRead from the original paper
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Equation
As printed (Eq. (14), additive constraints)
Wa = Ws + Wb + Wf + εa; Wt = Wr + Ws + Wb + Wf + εt
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.6941 + 2.5249 * ln(D)) + exp(-3.4568 + 2.0135 * ln(D)) + exp(-3.2145 + 1.5199 * ln(D))D- Diameter at breast height (1.3 m), cm
Dahurian larch, MS-2: the paper defines this total as the sum of its component equations (Eq. 14 constraints), with coefficients of the component rows in Table 5; the expression is that sum, not a separately printed formula. Stem includes bark; roots exclude fine roots <5 mm.
Source
doi:10.3390/f9050261 · Open access · copy we read
138 Dahurian larch trees and 108 white birch trees were destructively sampled
- Trees measured
- 138
- DBH range
- 1.7–28.4 cm
- Height range
- 2.4–21.9 m
- Method
- seemingly unrelated regression (SUR), additive system, W = exp(b0) D^b1 H^b2
- Where
- Eastern Daxing'an Mountains, Heilongjiang, northeast China
- Last checked
- 2026-11-02
Calculate
3.084
Aboveground biomass (kg)
1.449
Carbon (kg), ×0.47
5.314
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 = 4 | 3.08 | 3.08 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 10 | 27.2 | 27.2 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 18 | 113.7 | 113.7 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
- Chekanovsky larch AGB from DBH only, unweighted (Table 3) · Altanzagas et al. 2022 · DBH
- Chekanovsky larch AGB from DBH only, weighted (Table 3) · Altanzagas et al. 2022 · DBH
- Chekanovsky larch AGB from D²H, unweighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Chekanovsky larch AGB from D²H, weighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Chekanovsky larch AGB from D and H, weighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- Gmelin larch AGB from DBH only, unweighted (Table 3) · Altanzagas et al. 2022 · DBH
- Gmelin larch AGB from DBH only, weighted (Table 3) · Altanzagas et al. 2022 · DBH
- Gmelin larch AGB from D²H, unweighted (Table 3) · Altanzagas et al. 2022 · DBH + Height
- White birch aboveground biomass from D only (MS-2) (sum of components, Table 5) · same paper · Aboveground biomass
- White birch branch biomass from D only (MS-2) (Table 5) · same paper · Branch biomass
- White birch foliage biomass from D only (MS-2) (Table 5) · same paper · Foliage biomass
- White birch root biomass from D only (MS-2) (Table 5) · same paper · Root biomass
- White birch stem biomass from D only (MS-2) (Table 5) · same paper · Stem biomass
- White birch total (above + below ground) biomass from D only (MS-2) (sum of components, Table 5) · same paper · Total biomass
- White birch aboveground biomass from D and H (MS-3) (sum of components, Table 6) · same paper · Aboveground biomass
- White birch branch biomass from D and H (MS-3) (Table 6) · same paper · Branch biomass