Grevillea robusta / Aboveground biomass
Grevillea robusta on farms, polynomial in DBH (selected model)
Aboveground biomassGrevillea robusta · ProteaceaeKenyaagroforestryRead from the original paper
© stinger · CC BY · iNaturalistEquation
As printed (Table 7)
AGB=0.248DBH2 + 6.243DBH – 15.45
In this library's units, ready to compute (kg)
Aboveground biomass = 0.248 * D^2 + 6.243 * D - 15.45D- Diameter at breast height (1.3 m), cm
Selected by the authors. Returns negative AGB below about 2.3 cm DBH, inside the fitted range; use owate-2018-agb-power for trees that small. the authors say the trees do not grow beyond 40 cm DBH and the model should not be applied to larger trees. DBH range from Appendix Table 10.
Source
doi:10.1155/2018/6495271 · Open access · copy we read
33
- Trees measured
- 33
- DBH range
- 1.5–29.8 cm
- Height range
- 3.6–24.8 m
- R²
- 0.94
- Method
- polynomial regression on untransformed data
- Where
- Maragua subcounty, Murang'a County, central Kenya (farms)
- Last checked
- 2026-11-01
Calculate
134
Aboveground biomass (kg)
63
Carbon (kg), ×0.47
231
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 = 15 | 134 | 134 | Computed from the printed form hand-computed from the published form |
| D = 28 | 354 | 354 | Computed from the printed form hand-computed from the published form |
Related
- Total aboveground biomass, Grevillea robusta, dap only · Begazo Curie & Jave Nakayo 2018 · DBH
- Grevillea robusta on farms, power model in DBH · Owate et al. 2018 · DBH
- Grevillea robusta on farms, power model in DBH · same paper · Aboveground biomass