Equations / Aboveground biomass
Shorea genus, Vietnam, AGB from D (S1, Eq. 19)
Aboveground biomassShorea · DipterocarpaceaeVietnamnaturalRead from the original paper
Covers the whole genus
Equation
As printed (Eq. 19, p. 11)
Shorea: AGB = 0.07483 × DBH2.54496
In this library's units, ready to compute (kg)
Aboveground biomass = 0.07483 * D^2.54496D- Diameter at breast height (1.3 m), cm
AGB is the sum of stem, branch and foliage dry mass. Fitted on the whole dataset with the fixed-effects model; the random ecoregion effect was not retained. No correction factor is stated. The DBH range of the Shorea data stops at 23 cm; do not extrapolate.
Source
doi:10.3390/f7080180 · Open access · copy we read
n 36 (Shorea Genus)
- Trees measured
- 36
- DBH range
- 5.6–23 cm
- Height range
- 4.4–14.1 m
- Method
- nonlinear weighted least squares (power variance function)
- Where
- Dipterocarp forests, Central Highlands and Southeast ecoregions, Vietnam
- Last checked
- 2026-11-02
Calculate
14.9
Aboveground biomass (kg)
6.99
Carbon (kg), ×0.47
25.6
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 = 8 | 14.9 | 14.9 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 15 | 73.7 | 73.7 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 22 | 195 | 195 | Computed from the printed form computed from the published form (coefficients as printed) |
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- Shorea spp., DBH only · Basuki et al. 2009 · DBH
- Dipterocarpus genus, Vietnam, AGB from D (D1, Eq. 18) · same paper · Aboveground biomass
- Dipterocarp forests Vietnam, mixed-species AGB from D (M1) · same paper · Aboveground biomass
- Dipterocarp forests Vietnam, mixed-species AGB from D and H (M2) · same paper · Aboveground biomass
- Dipterocarp forests Vietnam, mixed-species AGB from D and wood density (M3) · same paper · Aboveground biomass
- Dipterocarp forests Vietnam, mixed-species AGB from D, H and wood density (M4, Eq. 17) · same paper · Aboveground biomass