Equations / Aboveground biomass
Tectona grandis AGB from D
Aboveground biomassTectona grandis · LamiaceaeThailandplantationRead from the original paper
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Equation
As printed (Table 5)
AGB = 0.077(D)2.546
In this library's units, ready to compute (kg)
Aboveground biomass = 0.077 * D^2.546D- Diameter at breast height (1.3 m), cm
General (multi-site) equation fitted on pooled data compiled from published Thai plantation studies (theses, proceedings, reports), not on new felled trees; validated by the authors on independent harvests. D in cm, H in m, output kg dry weight per tree. AGB is the sum of stem, branches and leaves.
Source
doi:10.1016/j.anres.2015.08.001 · Open access · copy we read
12 datasets with a total of 84 trees were chosen for T. grandis
The ranges in the diameters and heights of trees in the dataset were 4.4–41.2 cm and 5.5–31.0 m for T. grandis, and 0.5–19.8 and 1.7–26.0 m for E. camaldulensis
Linear regressions of untransformed data were used in the present study because log transformed data introduced a systematic bias
- Trees measured
- 84
- DBH range
- 4.4–41.2 cm
- Height range
- 5.5–31 m
- R²
- 0.978
- Method
- Least-squares power regression on untransformed data (weighted data from 12-13 published datasets)
- Where
- Plantations across Thailand
- Last checked
- 2026-11-02
Calculate
76
Aboveground biomass (kg)
35.72
Carbon (kg), ×0.47
131
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 | 76 | 76 | Computed from the printed form computed from the published form |
| D = 25 | 279 | 279 | Computed from the printed form computed from the published form |
Related
- Tectona grandis AGB from D²H · Ounban et al. 2016 · DBH + Height
- Eucalyptus camaldulensis AGB from D · same paper · Aboveground biomass
- Eucalyptus camaldulensis AGB from D²H · same paper · Aboveground biomass
- Eucalyptus camaldulensis leaf biomass from D²H · same paper · Foliage biomass
- Eucalyptus camaldulensis stem (wood + bark) biomass from D · same paper · Stem biomass
- Eucalyptus camaldulensis stem (wood + bark) biomass from D²H · same paper · Stem biomass
- Tectona grandis AGB from D²H · same paper · Aboveground biomass
- Tectona grandis leaf biomass from D²H · same paper · Foliage biomass
- Tectona grandis stem (wood + bark) biomass from D · same paper · Stem biomass