# C. tabularis height from D (1/H = a + b/D, Model 3)

Height equation for Chukrasia tabularis, Bangladesh, from Tipu et al. 2021. DBH 9–52 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

## Equation

As printed in Tipu et al. 2021 (Table 2, Model 3):

> 1/H = a + b (1/D) ... 0.024 ... 0.643

Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#equation

In this library's units, ready to compute (height in m):

```
Height = 1 / (0.024 + 0.643 / D)
```

Inputs: D = Diameter at breast height (1.3 m) (cm).
The source's own form: 1 / (0.024 + 0.643 * (1 / DBH)), with DBH in cm; output in m.
Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#canonical

## What it covers

- Output: Height, m
- Taxon: Chukrasia tabularis (species), family Meliaceae; broadleaf
- Where: Rema-Kalenga Wildlife Sanctuary, Sylhet region, Bangladesh. Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#where
- Biomes: tropical
- Stand: natural
- DBH range: 9–52 cm. Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#dbh
- Height range: 9–37 m. Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#height
- R²: 0.617. Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#r2
- Method: linear regression of 1/H on 1/D (adjusted R2 reported). Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#method
- Verification: read in the original source
- Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#checked_at

A missing fit statistic is one the source doesn't state, or that we haven't recorded; it is never estimated. Outside the stated DBH range or region, the equation is an extrapolation.

## Source

Tipu, M. T. K., Manzoor Rashid, A. Z. M., Tahasina, C., & Mahmood, H. (2021). Semi-destructive approach in developing allometric biomass for Chukrasia tabularis in Sylhet region of Bangladesh. Journal of Tropical Forest Science, 33(2), 203–212.

- DOI: https://doi.org/10.26525/jtfs2021.33.2.203
- Access: open access
- Copy we read: https://web.archive.org/web/2024/https://info.frim.gov.my/infocenter_applications/jtfsonline/jtfs/v33n2/203-212.pdf
- Every equation from this source: https://treeallometry.org/sources/tipu-2021/
- Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#source

## The facts, in the source's words

**Equation** (Table 2, Model 3):

> 1/H = a + b (1/D) ... 0.024 ... 0.643

Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#equation

**Equation** (Results, p. 207):

> 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

Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#quote-expression

**Our note:** 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).

## Checks this equation passes

On every build, the library's form and the source'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) |

Cite: https://treeallometry.org/equations/tipu-2021-h-inverse/#checks

## How to cite

Cite the source for the equation: Tipu, M. T. K., Manzoor Rashid, A. Z. M., Tahasina, C., & Mahmood, H. (2021). Semi-destructive approach in developing allometric biomass for Chukrasia tabularis in Sylhet region of Bangladesh. Journal of Tropical Forest Science, 33(2), 203–212. https://doi.org/10.26525/jtfs2021.33.2.203

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "C. tabularis height from D (1/H = a + b/D, Model 3)", checked 2026-11-02, https://treeallometry.org/equations/tipu-2021-h-inverse/. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Quotes are the authors' words.

Data for this equation: https://treeallometry.org/data/equations/tipu-2021-h-inverse.json
Report a problem: email info@restorationscope.com with the equation id (tipu-2021-h-inverse) and where the right value appears.