Equations / Aboveground biomass
Total aboveground biomass, Pinus tecunumanii shade trees, power-law DBH+H
© Neptalí Ramírez Marcial · CC BY · iNaturalistAs printed (Table 1 (form) and Table 4 (parameters))
In this library's units, ready to compute (kg)
Aboveground biomass = 0.30282 * D^1.632483 * H^0.589319D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Parameters read from the HTML table pages (Table 4 gives the three parameters of each total model run together in one cell; split at six decimals, which reproduces a sensible biomass). 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. Table 4 pseudo-R2 0.76, RMSE 135.1 kg for the power-law; 0.75 and 137.2 kg for the exponential.
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 | 108.9 | 108.9 | Computed from the printed form hand-computed from the published form |
| D = 30, H = 20 | 456.3 | 456.3 | Computed from the printed form hand-computed from the published form |
Related
- Tropical pines AGB from DBH (Eq. 3.1.8 / 3.2.8) · Brown 1997 · DBH
- Total aboveground biomass, Pinus tecunumanii shade trees, exponential DBH+H · Chalupová et al. 2026 · DBH + Height
- North American taxa group: Pinus ≥ 0.45 spg (Table 5) · Chojnacky et al. 2014 · DBH
- Pinus caribaea total aboveground biomass, sum of simultaneous component models · Coutinho et al. 2018 · DBH + Height + Wood density
- Pinus cembroides, additive system S2 (D and H): total aboveground biomass (sum of components) · Cuevas Cruz & Aquino Ramírez 2020 · DBH + Height
- Pinus brutia total biomass, Lebanon (Eq. 37) · de-Miguel et al. 2014 · DBH + Height
- Pinus brutia total biomass, Lebanon (Eq. 38) · de-Miguel et al. 2014 · DBH
- Pinus brutia total biomass, Middle East (Eq. 47) · de-Miguel et al. 2014 · DBH
- Total aboveground biomass, Pinus tecunumanii shade trees, exponential DBH+H · same paper · Aboveground biomass
- Branch biomass, Pinus tecunumanii shade trees, power-law DBH+H · same paper · Branch biomass
- Foliage biomass, Pinus tecunumanii shade trees, power-law DBH+H · same paper · Foliage biomass
- Stem biomass, Pinus tecunumanii shade trees, power-law DBH+H · same paper · Stem biomass