Acacia auriculiformis × Acacia mangium / Aboveground biomass
Acacia hybrid plantation, Sarawak, AGB from D (power)
Aboveground biomassAcacia mangium × Acacia auriculiformis (Acacia hybrid) · FabaceaeMalaysiaplantationRead from the original paper
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Equation
As printed (Table 2, model 2)
y = 0.175D2.350
In this library's units, ready to compute (kg)
Aboveground biomass = 0.175 * D^2.35D- Diameter at breast height (1.3 m), cm
About 10-year-old stand. AGB is the sum of stem, branch and leaf dry mass. The paper also prints linear, exponential and logarithmic fits (Table 2) but rejects them (negative predictions for small trees); only the power model, which the authors select, is included.
Source
doi:10.15376/biores.13.4.7381-7394 · Open access · copy we read
36 trees of Acacia hybrid were harvested
The DBH of felled Acacia hybrid and second generation A. mangium ranged from 12.8 to 40.9 cm and 11.6 to 41.5 cm, respectively
natural hybridization of Acacia mangium and Acacia auriculiformis produced the Acacia hybrid
- Trees measured
- 36
- DBH range
- 12.8–40.9 cm
- R²
- 0.96
- Method
- power regression of dry AGB on DBH
- Where
- Daiken Sarawak plantation, Bintulu district, Sarawak
- Last checked
- 2026-11-02
Calculate
102
Aboveground biomass (kg)
47.7
Carbon (kg), ×0.47
175
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 | 102 | 102 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 25 | 337 | 337 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 40 | 1,018 | 1,018 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
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- Planted Acacia mangium, West Java, aboveground biomass from D, 10-year stand (model A) · Miyakuni et al. 2004 · DBH
- Planted Acacia mangium, West Java, aboveground biomass from D, 3-year stand (model A) · Miyakuni et al. 2004 · DBH
- Planted Acacia mangium, West Java, aboveground biomass from D, 5-year stand (model A) · Miyakuni et al. 2004 · DBH
- Planted Acacia mangium, West Java, aboveground biomass from D, 8-year stand (model A) · Miyakuni et al. 2004 · DBH
- Planted Acacia mangium, West Java, aboveground biomass from D, all ages (model B) · Miyakuni et al. 2004 · DBH
- Acacia melanoxylon AGB in Andean agroforestry, sum of SUR component models (DBH, height) · Riofrío et al. 2013 · DBH + Height
- Acacia mangium (2nd generation) plantation, Sarawak, AGB from D (power) · same paper · Aboveground biomass