# Branch biomass, Eucalyptus saligna young plantation, dbh only

Branch biomass equation for Eucalyptus saligna, Ecuador, from Ramos-Veintimilla et al. 2025. 46 trees, DBH 5.9–21 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

## Equation

As printed in Ramos-Veintimilla et al. 2025 (Table 2):

> Ln(B) = −3.63 + 2.37∗Ln(dbh)

Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#equation

In this library's units, ready to compute (branch biomass in kg):

```
Branch biomass = exp(-3.63 + 2.37 * ln(D))
```

Inputs: D = Diameter at breast height (1.3 m) (cm).
The source's own form: exp(-3.63 + 2.37 * ln(dbh)), with dbh in cm; output in kg.
Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#canonical

## What it covers

- Output: Branch biomass, kg
- Taxon: Eucalyptus saligna (species), family Myrtaceae; broadleaf
- Where: Tunshi Experimental Station, ESPOCH, Chimborazo (Lower Montane thorny steppe). Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#where
- Biomes: subtropical, montane
- Stand: plantation
- Trees measured: 46. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#n_trees
- DBH range: 5.9–21 cm. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#dbh
- Height range: 5.4–14.8 m. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#height
- R²: 0.6. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#r2
- Method: OLS on Ln(B) vs Ln(dbh); no correction factor applied. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#method
- Verification: read in the original source
- Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#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

Ramos-Veintimilla, R., Andrade, H. J., Vera-Velez, R., Esparza-Parra, J., Panama-Perugachi, P., Segura, M., & Grijalva-Olmedo, J. (2025). Allometric Models to Estimate Aboveground Biomass of Individual Trees of Eucalyptus saligna Sm in Young Plantations in Ecuador. International Journal of Plant Biology, 16(2), 39.

- DOI: https://doi.org/10.3390/ijpb16020039
- Access: open access
- Copy we read: https://www.mdpi.com/2037-0164/16/2/39/htm
- Every equation from this source: https://treeallometry.org/sources/ramos-veintimilla-2025/
- Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#source

## The facts, in the source's words

**Equation** (Table 2):

> Ln(B) = −3.63 + 2.37∗Ln(dbh)

Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#equation

**Trees measured** (Abstract):

> the research involved 46 trees

Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#quote-fit-n-trees

**Smallest DBH** (Materials and Methods):

> These trees had a dbh between 5.9 and 21.0 cm and 5.4 to 14.8 m of total height (ht).

Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#quote-fit-dbh-min-cm

**Our note:** Ln is the natural log as printed. Published without correction factor (Table 3 compares with and without CF; the authors give the model without CF, so none is applied). dbh in cm, biomass in kg/tree.

## 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 = 8 | 3.66 | 3.66 | Computed from the printed form: hand-computed from the published form |
| D = 15 | 16.2 | 16.2 | Computed from the printed form: hand-computed from the published form |

Cite: https://treeallometry.org/equations/ramos-veintimilla-2025-branch/#checks

The calculator on the page shows carbon as biomass × 0.47 (IPCC 2006 Guidelines, Vol. 4, Ch. 4, Table 4.3) and CO₂e as carbon × 44/12.

## How to cite

Cite the source for the equation: Ramos-Veintimilla, R., Andrade, H. J., Vera-Velez, R., Esparza-Parra, J., Panama-Perugachi, P., Segura, M., & Grijalva-Olmedo, J. (2025). Allometric Models to Estimate Aboveground Biomass of Individual Trees of Eucalyptus saligna Sm in Young Plantations in Ecuador. International Journal of Plant Biology, 16(2), 39. https://doi.org/10.3390/ijpb16020039

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Branch biomass, Eucalyptus saligna young plantation, dbh only", checked 2026-11-02, https://treeallometry.org/equations/ramos-veintimilla-2025-branch/. 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/ramos-veintimilla-2025-branch.json
Report a problem: email info@restorationscope.com with the equation id (ramos-veintimilla-2025-branch) and where the right value appears.