Vochysia guatemalensis / Total biomass
Vochysia guatemalensis plantations, total tree biomass incl. roots (Bt)
© Eric Knight · CC BY · iNaturalistAs printed (Cuadro 2, Vochysia guatemalensis (R2aj %, SEE, IF, n, FC))
In this library's units, ready to compute (kg)
Total biomass = 1.07 * exp(-1.44742 + 1.3308 * D^0.5)D- Diameter at breast height (1.3 m), cm
Bt is whole-tree dry biomass including excavated roots (kg/tree), so the output is total (above + below) biomass, not AGB. FC = 1,07 (exp(SEE²/2)) is printed in its own column and multiplied in here. One mean-diameter tree harvested per plot, plantations 0,5–16 years old; r2 is adjusted R². Diameter range is for the 54 sampled trees; the Bt model used n = 51.
doi:10.4067/S0717-92002009000100006 · Open access · copy we read
en V. guatemalensis la muestra fue de 54 individuos con diámetros entre 0,5 y 40,5 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
- 51
- DBH range
- 0.5–40.5 cm
- R²
- 0.9798
- Residual SE
- 0.3682
- Correction factor
- 1.07 (applied)
- Method
- OLS on ln(Bt) vs √d (Statgraphics); Sprugel correction factor
- Where
- Caribbean (Atlantic) lowlands of Costa Rica
- Last checked
- 2026-11-01
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
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 | 96.7 | 96.7 | Computed from the printed form computed from the Cuadro 2 model times FC 1,07 |
Related
- Hieronyma alchorneoides plantations, total tree biomass incl. roots (Bt) · same paper · Total biomass
- Caribbean Costa Rica secondary forest (35 species), root biomass from DBH · same paper · Root biomass