Equations / Aboveground biomass
Miombo mixed-species AGB from DBH, OLS (Model 2)
As printed (Table 4 caption)
In this library's units, ready to compute (kg)
Aboveground biomass = 0.143 * D^2.271D- Diameter at breast height (1.3 m), cm
The OLS comparison model; the authors found it overestimated AGB relative to the Bayesian Model 1 (DIC 59.02, MAPE 27.98%). Models 3-5 add height or crown area with non-significant terms and are not entered. The paper says the AGB is the "total biomass of aboveground woody parts"; leaves were weighed separately, so foliage is flagged as excluded. No correction factor is stated for the back-transform, so none is applied. Stand is a mix of woodland and land-use systems. AGB is stem + branches + twigs, and twigs include leaves (Section 2.3, Appendix I).
doi:10.3390/f7020013 · Open access · copy we read
A total of 88 trees ranging in DBH from 5.1 to 105 cm were harvested
total biomass of aboveground woody parts
- Trees measured
- 88
- DBH range
- 5.1–105 cm
- Method
- Ordinary least squares on ln-ln
- Where
- Kasungu, Salima and Neno districts, Malawi
- 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 = 20 | 129 | 129 | Computed from the printed form computed from the published form |
| D = 60 | 1,561 | 1,561 | Computed from the printed form computed from the published form |
Related
- Miombo mixed-species AGB from DBH, Bayesian (Model 1) · Kuyah et al. 2016 · DBH
- Miombo mixed-species AGB from DBH, Bayesian (Model 1) · same paper · Aboveground biomass