Fagus moesiaca / Stem biomass
Fagus moesiaca stem dry biomass, DBH (Table III lnMs)
Stem biomassFagus moesiacaGreecenaturalRead from the original paperPeer-reviewed source
© Igor Balashov · CC BY · iNaturalistEquation
As printed (Table III, model in caption and lnMs row, p. 442)
lnMs = ln a + b lnD; ln a = −1.6015, b = 2.3427
In this library's units, ready to compute (kg)
Stem biomass = 1.0220 * exp(-1.6015 + 2.3427 * ln(D))D- Diameter at breast height (1.3 m), cm
D is DBH at 1.3 m. Multiply by Table III's CF once; it equals exp(SEE²/2), although the text calls SEE²/2 CF. The paper calls this stem mass. The retained 5.19–40.6 cm range is explicitly reported in the methods (p. 441); the later comparison describes a largest Greek tree of 41.45 cm (p. 446). That sample-description discrepancy is not used to extend the reported range.
Source
doi:10.1051/forest:2003036 · Peer-reviewed · Open access · copy we read
lnMs lnD –1.6015 2.3427
MS: stem mass
oven dried to constant weight
Biomass is expressed in kg, diameter in cm, and height in m.
Fagus moesiaca Cz.
Vermio Mountains of Northern Greece
the forest can be classified as temperate Mediterranean
Naturally regenerated, pure beech
number of sampled trees was 16
5.19 to 40.6 cm
5.19 to 40.6 cm
0.98
0.2088
1.0220
Napierian logarithmic function
- Trees measured
- 16
- DBH range
- 5.19–40.6 cm
- R²
- 0.98
- Residual SE
- 0.2088
- Correction factor
- 1.022 (applied)
- Method
- natural-log regression
- Where
- Vermio Mountain, Northern Greece
- Last checked
- 2026-11-05
Calculate
230
Stem biomass (kg)
108
Carbon (kg), ×0.47
396
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 | 230 | 230 | Computed from the printed form Computed from Table III coefficients and CF. |
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