Fagus moesiaca / Branch biomass
Fagus moesiaca crown-branch dry biomass, DBH (Table III lnMBC)
Branch biomassFagus moesiacaGreecenaturalRead from the original paperPeer-reviewed source
© Igor Balashov · CC BY · iNaturalistEquation
As printed (Table III, model in caption and lnMBC row, p. 442)
lnMBC = ln a + b lnD; ln a = −6.3807, b = 3.1037
In this library's units, ready to compute (kg)
Branch biomass = 1.1295 * exp(-6.3807 + 3.1037 * 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. Crown branches only; this is not total branch biomass. 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
lnMBC lnD –6.3807 3.1037
MBC: branch mass in crown
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
0.95
0.4936
1.1295
Napierian logarithmic function
- Trees measured
- 16
- DBH range
- 5.19–40.6 cm
- R²
- 0.95
- Residual SE
- 0.4936
- Correction factor
- 1.1295 (applied)
- Method
- natural-log regression
- Where
- Vermio Mountain, Northern Greece
- Last checked
- 2026-11-05
Calculate
20.9
Branch biomass (kg)
9.81
Carbon (kg), ×0.47
36
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 | 20.9 | 20.9 | Computed from the printed form Computed from Table III coefficients and CF. |
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