Pinus tecunumanii / Branch biomass
Branch biomass, Pinus tecunumanii shade trees, power-law DBH+H
© Neptalí Ramírez Marcial · CC BY · iNaturalistAs printed (Table 1 (form) and Table 6 (parameters))
In this library's units, ready to compute (kg)
Branch biomass = 0.01042973 * D^2.43366 * H^0.3763336D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Parameters read from the HTML table page of Table 6 (component models, DBH+H power-law), which prints a, b and c in separate columns; Table 6 RMSE 36.1 kg, pseudo-R2 0.85 for the branch model. Fitted by NLS directly on biomass, so no back-transform correction. B is dry biomass (kg). The paper reports pseudo-R2 and RMSE per model; not copied as r2. Models valid only within the calibration ranges.
doi:10.1007/s10457-026-01648-8 · Open access · copy we read
A total of 22 shade trees were sampled, with diameters at breast height (DBH) ranging from 9.9 to 43.8 cm and total heights (H) from 6.3 to 38 m.
- Trees measured
- 22
- DBH range
- 9.9–43.8 cm
- Height range
- 6.3–38 m
- Method
- non-linear least squares
- Where
- San Alberto coffee plantation, Oxapampa, Pasco (1,900 m a.s.l.)
- Last checked
- 2026-11-02
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 = 15, H = 12 | 19.3 | 19.3 | Computed from the printed form hand-computed from the published form |
| D = 30, H = 20 | 127 | 127 | Computed from the printed form hand-computed from the published form |
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