Sonneratia apetala / Foliage biomass
Sonneratia apetala leaf biomass, a x^b of rho * DBH (Table 4)
Foliage biomassSonneratia apetala · LythraceaeMyanmar (Burma)naturalRead from the original paper
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Equation
As printed (Table 4)
Leaf (kg) ρDBH (g cm−3, cm) 15 0.0165 (±0.0110) 2.519 (±0.462) 0.696*
In this library's units, ready to compute (kg)
Foliage biomass = 0.0165 * (rho * D)^2.519rho- Wood density (oven-dry mass / green volume), g/cm³
D- Diameter at breast height (1.3 m), cm
Power-law fit; the paper states coefficients are back-transformed from the log-log OLS fit and prints no correction factor, so none is applied. Site-level model for the Letkhokkon delta mangrove (Ayeyarwady delta region), Myanmar. Wood density rho is per-tree basic density measured on trunk discs (species means: 0.557 g/cm3 Ao, 0.471 g/cm3 Sa).
Source
doi:10.3759/tropics.simm01 · Open access · copy we read
Sa 15 5.1 20 4.6 13.6
The S. apetala had a DBH range of 5.1 cm to 20.0 cm and a H range of 4.6 m to 13.6 m
- Trees measured
- 15
- DBH range
- 5.1–20 cm
- Height range
- 4.6–13.6 m
- R²
- 0.696
- Method
- Power function y = a x^b fitted in SPSS Curve Estimation (OLS on log-transformed variables, then back-transformed)
- Where
- Letkhokkon delta mangrove, Myanmar
- Last checked
- 2026-11-02
Calculate
0.542
Foliage biomass (kg)
0.255
Carbon (kg), ×0.47
0.934
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 = 8, rho = 0.5 | 0.542 | 0.542 | Computed from the printed form computed from the Table 4 coefficients |
| D = 15, rho = 0.5 | 2.64 | 2.64 | Computed from the printed form computed from the Table 4 coefficients |
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