Equations / Total biomass
Hieronyma alchorneoides plantations, total tree biomass incl. roots (Bt)
Total biomassHieronyma alchorneoides · PhyllanthaceaeCosta RicaplantationRead from the original paper
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Equation
As printed (Cuadro 2, Hieronyma alchorneiodes)
Bt = exp(-2,12607 + 1,69594* d ^0,5) 97,77 0,3478 – 53 1,06
In this library's units, ready to compute (kg)
Total biomass = 1.06 * exp(-2.12607 + 1.69594 * D^0.5)D- Diameter at breast height (1.3 m), cm
Bt includes roots (total above + below, kg/tree). FC = 1,06 multiplied in. Diameter range is for the 58 sampled trees; the Bt model used n = 53. r2 is adjusted R².
Source
doi:10.4067/S0717-92002009000100006 · Open access · copy we read
Para H. alchorneoides se evaluaron 58 árboles con diámetros entre 0,5 y 28,8 cm
Los modelos seleccionados con transformaciones logarítmicas fueron corregidos utilizando un factor de corrección (FC)
biomasa total (Bt), que incluye todos los componentes del árbol
- Trees measured
- 53
- DBH range
- 0.5–28.8 cm
- R²
- 0.9777
- Residual SE
- 0.3478
- Correction factor
- 1.06 (applied)
- Method
- OLS on ln(Bt) vs √d (Statgraphics); Sprugel correction factor
- Where
- Caribbean (Atlantic) lowlands of Costa Rica
- Last checked
- 2026-11-01
Calculate
248.8
Total biomass (kg)
116.9
Carbon (kg), ×0.47
428.8
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 | 248.8 | 248.8 | Computed from the printed form computed from the Cuadro 2 model times FC 1,06 |
Related
- Caribbean Costa Rica secondary forest (35 species), root biomass from DBH · same paper · Root biomass
- Vochysia guatemalensis plantations, total tree biomass incl. roots (Bt) · same paper · Total biomass