Guadua angustifolia / Aboveground biomass
Guadua culm AGB from dbh, weighted linear model (Model 2, Table 4)
© Daniel A. Monsalve Ortiz · CC BY · iNaturalistAs printed (Table 4, Model 2 (form AGB = a1 + b1 × X1, Eq. 7))
In this library's units, ready to compute (kg)
Aboveground biomass = -29.755 + 6.2659 * DD- Diameter at breast height (1.3 m), cm
Per culm (guadua bamboo), not per tree; dbh is culm diameter at breast height in cm, AGB in kg (culm + branches + leaves). Model 2 of the paper; the intercept is negative so the linear form gives negative AGB below dbh of about 4.7 cm. The paper's Table 2 gives culm dbh 6.6 to 16.6 cm for the assessed forests but does not say that is the fitted sample, so no range is recorded. Source table shows only the model number, predictor, a and b.
doi:10.1007/s10668-023-03460-1 · Open access · copy we read
a total of 130 of these culms were used for destructive sampling and calculating biomass
- Trees measured
- 130
- R²
- 0.7866
- Method
- weighted linear regression (weights 1/dbh^2δ)
- Where
- Coffee region, Colombian Andes (six sites, 900 to 2000 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 = 8 | 20.4 | 20.4 | Computed from the printed form hand-computed from the published form |
| D = 12 | 45.4 | 45.4 | Computed from the printed form hand-computed from the published form |
| D = 16 | 70.5 | 70.5 | Computed from the printed form hand-computed from the published form |
Related
- Guadua culm AGB from dbh, weighted power model (Model 7, Table 7) · Camargo García et al. 2024 · DBH
- Guadua weberbaueri and G. sarcocarpa culm AGB from DBH (DBH-only model) · Yavit 2017 · DBH
- Guadua culm AGB from dbh, weighted power model (Model 7, Table 7) · same paper · Aboveground biomass