Equations / Aboveground biomass
Trees on farms in western Kenya, DBH only
Aboveground biomassTrees on farms, mixed species (agricultural landscape)KenyaagroforestryFrom a compilation, not the original
Many species, no single photo
Equation
As printed (Kuyah & Rosenstock 2015, Methods / Table 1)
(equation 3, AGB = 0.091 × DBH^2.472)
In this library's units, ready to compute (kg)
Aboveground biomass = 0.091 * D^2.472D- Diameter at breast height (1.3 m), cm
Fitted by Kuyah et al. 2012 (not read: paywalled). Read from Kuyah & Rosenstock 2015, which restates it as equation 3. That text does not say whether a log back-transform correction is folded into 0.091; output assumed kg, DBH in cm.
Source
doi:10.1016/j.agee.2012.05.011 · Paywalled · compilation we read
72
- Trees measured
- 72
- DBH range
- 2.5–102 cm
- R²
- 0.977
- Method
- power model (coefficients as in Kuyah et al. 2012a)
- Where
- Yala River basin, western Kenya
- Last checked
- 2026-11-01
Calculate
150
Aboveground biomass (kg)
70.4
Carbon (kg), ×0.47
258
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 = 20 | 150 | 150 | Computed from the printed form hand-computed from the published form |
| D = 50 | 1,442 | 1,442 | Computed from the printed form hand-computed from the published form |