Equations / Foliage biomass
Avicennia lanata Leaf biomass from D30 (Table 1)
Foliage biomassAvicennia lanata · AcanthaceaeIndonesianaturalRead from the original paper
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Equation
As printed (Section 3.1, p. 401)
coefficient g: 0.0201, coefficient h: 2.1127, R2: 0.9380
In this library's units, ready to compute (kg)
Foliage biomass = 0.0201 * D30^2.1127D30- Stem diameter at 30 cm, cm
Form Y = g X^h, no correction factor stated. The paper does not state units in the text; DBH in cm and biomass in kg are read from Table 2 and the axis labels of Figures 2 and 3. The DBH range of the 13 harvested trees is not stated (Table 2 describes the stand), so no range is given. Young natural regeneration: the stand census in Table 2 ran from 2.7 to 9.4 cm DBH and the stand was under 10 m tall (Section 2.1).
Source
doi:10.4308/hjb.29.3.399-408 · Open access · copy we read
A total of 13 individuals of A. lanata with various DBH sizes was collected
- Trees measured
- 13
- R²
- 0.938
- Method
- power-law regression Y = g X^h
- Where
- In-active pond, Muna Regency, Southeast Sulawesi
- Last checked
- 2026-11-02
Calculate
0.205
Foliage biomass (kg)
0.096
Carbon (kg), ×0.47
0.353
CO₂e (kg), ×44/12
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 |
|---|---|---|---|
| D30 = 3 | 0.205 | 0.205 | Computed from the printed form computed from the published form Y = g X^h |
| D30 = 6 | 0.885 | 0.886 | Computed from the printed form computed from the published form Y = g X^h |
| D30 = 9 | 2.09 | 2.09 | Computed from the printed form computed from the published form Y = g X^h |
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