Equations / Height
C. tabularis height from D (1/H = a + b/D, Model 3)
HeightChukrasia tabularis · MeliaceaeBangladeshnaturalRead from the original paper
© A. J. T. Johnsingh · CC BY-SA · iNaturalistEquation
As printed (Table 2, Model 3)
1/H = a + b (1/D) ... 0.024 ... 0.643
In this library's units, ready to compute (m)
Height = 1 / (0.024 + 0.643 / D)D- Diameter at breast height (1.3 m), cm
r2 here is the adjusted R2 (0.617) as printed in Table 2; RSE printed as 0.011 (on 1/H scale), left out. Range from the sampling description (98 model-development trees, 9–52 cm and 9–37 m).
Source
doi:10.26525/jtfs2021.33.2.203 · Open access · copy we read
The linear model (1/H = 0.024 + 0.643 × (1/D)) appeared as best-fit model for total height and diameter at breast height relationship
- DBH range
- 9–52 cm
- Height range
- 9–37 m
- R²
- 0.617
- Method
- linear regression of 1/H on 1/D (adjusted R2 reported)
- Where
- Rema-Kalenga Wildlife Sanctuary, Sylhet region, Bangladesh
- Last checked
- 2026-11-02
Calculate
11.33
Height (m)
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 | 11.3 | 11.3 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 25 | 20.1 | 20.1 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 40 | 25 | 25 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
- C. tabularis AGB from D2H (Model 7, bias-corrected) · same paper · Aboveground biomass