Equations / Aboveground biomass
Small-tree total AGB, multi-species, DBH and height model (Model II)
Aboveground biomass22 small-diameter (DBH ≤ 10 cm) tree species of secondary tropical forestMexiconaturalRead from the original paper
Many species, no single photo
Equation
As printed (Tab. 1, p. 168)
AGBtotal-tree multi-species= exp(-2.97501)(DBH2·H)0.957051
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.97501) * (D^2 * H)^0.957051D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Multi-species total-tree equation (stem + branches + foliage) from Model II, which needs no wood density. The paper lists adj-R2 0.95 and RMSE 0.1552. No correction factor is stated.
Source
doi:10.3832/ifor3167-013 · Open access · copy we read
311 trees in total
22 species ranging from 1 to 10 cm DBH
- Trees measured
- 311
- DBH range
- 1–10 cm
- Method
- Nonlinear weighted OLS (SAS PROC MODEL), multi-species
- Where
- Southeast Yucatan peninsula (between Sian Ka'an, Quintana Roo, and Calakmul, Campeche)
- Last checked
- 2026-11-02
Calculate
Height from
10.14
Aboveground biomass (kg)
4.768
Carbon (kg), ×0.47
17.48
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 = 6, H = 7 | 10.1 | 10.1 | Computed from the printed form computed from the Tab. 1 coefficients |
Related
- Small-tree total AGB, multi-species, wood density model (Model I) · Puc-Kauil et al. 2020 · Wood density + DBH + Height
- Small-tree total AGB, multi-species, wood density model (Model I) · same paper · Aboveground biomass