Equations / Foliage biomass
Natural larch leaf (foliage) biomass from dbh (Table 5, with CF)
As printed (Table 5, Leaf row)
In this library's units, ready to compute (kg)
Foliage biomass = 1.038 * exp(-3.080 + 1.833 * ln(D))D- Diameter at breast height (1.3 m), cm
Equations reported in Table 5 (best additive system, log scale: ln W = a + b ln x); correction factor CF from Table 5 applied multiplicatively to exp(ln W) (Section 2.6 describes a multiplicative correction factor; the printed Eq. 9 was not readable in the HTML copy, so the multiplicative use is the paper's own description). ln is the natural logarithm. n and ranges from Table 1 / Section 2.2. Wood and bark are separate component equations in the paper (not added individually); they are summed inside the aboveground equation. The Discussion and Conclusions note that the CFs are small (<1.06) and "can be ignored", and that applying a CF breaks the additivity of the component equations; the CF is applied here because the paper prints it per equation in Table 5 and describes it as a multiplicative correction (Section 2.6).
doi:10.3390/f10020150 · Open access · copy we read
A total of 58 trees were randomly selected
- Trees measured
- 58
- DBH range
- 3.2–52 cm
- Height range
- 4.91–27.72 m
- Correction factor
- 1.038 (applied)
- Method
- seemingly unrelated regression (SUR) on log-transformed equations, additive system
- Where
- Western Daxing'anling Mountains, Inner Mongolia, China
- Last checked
- 2026-11-02
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
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 = 8, H = 7 | 2.16 | 2.16 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 22, H = 17 | 13.8 | 13.8 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 45, H = 25 | 51.2 | 51.2 | Computed from the printed form computed from the published form (coefficients as printed) |
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- Larch (Larix gmelinii) foliage biomass from D only (System 1, Table 4) · Dong et al. 2016 · DBH
- Larch (Larix gmelinii) foliage biomass from D and H (System 2, Table 4) · Dong et al. 2016 · DBH + Height
- Dahurian larch foliage biomass from D only (MS-2) (Table 5) · Dong et al. 2018 · DBH
- Dahurian larch foliage biomass from D and H (MS-3) (Table 6) · Dong et al. 2018 · DBH + Height
- Larch foliage biomass from DBH and height, AMS2 · Dong et al. 2020 · DBH + Height
- Natural larch aboveground biomass from dbh and h (Table 5, with CF) · same paper · Aboveground biomass
- Natural larch branch biomass from dbh (Table 5, with CF) · same paper · Branch biomass