Pinus radiata / Aboveground biomass
Radiata pine total AGB, weighted arithmetic model Eq. 18
Aboveground biomassPinus radiata · PinaceaeNew ZealandplantationRead from the original paper
© Forest and Kim Starr · CC BY · iNaturalistEquation
As printed (Section 2.2, Eq. 18)
AGB = β0 + β1 D2 (18)
In this library's units, ready to compute (kg)
Aboveground biomass = 69.4057 + 0.2877 * D^2D- Diameter at breast height (1.3 m), cm
D in cm, H in m, AGB in kg. Fitted directly on the arithmetic scale, so no correction factor. Fit ranges are the pooled data (Table I overall). Eq. 18 under-predicts large trees according to the paper (Section 3.2).
Source
doi:10.1051/forest/2010042 · Open access · copy we read
69.4057 | 0.2877
biomass measurements for 637 individual radiata pine trees from 13 different studies
0.78
- Trees measured
- 637
- DBH range
- 0.7–80.6 cm
- Height range
- up to 42.1 m
- R²
- 0.78
- Method
- weighted (varPower) mixed-effects model on the arithmetic scale; no back-transformation needed
- Where
- New Zealand (13 studies, mainly North Island)
- Last checked
- 2026-11-02
Calculate
98.2
Aboveground biomass (kg)
46.1
Carbon (kg), ×0.47
169
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 = 10 | 98.2 | 98.2 | Computed from the printed form hand-computed from the published form |
| D = 25 | 249 | 249 | Computed from the printed form hand-computed from the published form |
| D = 50 | 789 | 789 | Computed from the printed form hand-computed from the published form |
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- Radiata pine total AGB, weighted arithmetic model Eq. 13 · same paper · Aboveground biomass
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