Alnus incana / Aboveground biomass
Gray alder, European Russia pooled: aboveground biomass from D (Eq. 5)
Aboveground biomassAlnus incana · BetulaceaeRussiamixedRead from the original paper
© Hladac · CC BY-SA · iNaturalistEquation
As printed (Eq. (5), p. 46)
ln Pa = –2,5395 + 2,4527 ln D; adjR2 = 0,939, SE = 0,26.
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.5395 + 2.4527 * ln(D))D- Diameter at breast height (1.3 m), cm
Generalised model recommended by the authors for aboveground biomass of gray alder in European Russia, combining the new northern taiga data with southern data (Smirnov 1971; Kazimirov et al. 1978; Miezite et al. 2011). Sample size and DBH range of the pooled set are not printed. Natural log; no separate correction factor stated. Reports adjusted R2 = 0.939.
Source
doi:10.51318/fret.2023.36.20.005 · Open access · copy we read
- Residual SE
- 0.26
- Method
- OLS regression on natural logarithms of the pooled northern and southern data
- Where
- European Russia: northern taiga (Arkhangelsk) plus southern taiga and coniferous-broadleaved subzones
- Last checked
- 2026-11-02
Calculate
4.09
Aboveground biomass (kg)
1.92
Carbon (kg), ×0.47
7.04
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 | 4.09 | 4.09 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 10 | 22.4 | 22.4 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 15 | 60.5 | 60.5 | Computed from the printed form computed from the published form (coefficients as printed) |
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