# Quercus resinosa, power model, D²H (model 2)

Aboveground biomass equation for Quercus resinosa Liebmann, Mexico, from Navarro-Martínez et al. 2020. 19 trees, DBH 14.1–57.7 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

## Equation

As printed in Navarro-Martínez et al. 2020 (Table 5, model 2):

> B̂i = 0.01532 * (D² * H)^1.0958

Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#equation

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

```
Aboveground biomass = 0.01532 * (D^2 * H)^1.0958
```

Inputs: D = Diameter at breast height (1.3 m) (cm); H = Total tree height (m).
The source's own form: 0.01532 * (D^2 * H)^1.0958, with D in cm, H in m; output in kg.
Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#canonical

## What it covers

- Output: Aboveground biomass, kg
- Taxon: Quercus resinosa Liebmann (species), family Fagaceae; broadleaf
- Where: Microcuenca del río Hueyapa, Guerrero (bosque templado). Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#where
- Biomes: temperate
- Stand: natural
- Trees measured: 19. Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#n_trees
- DBH range: 14.1–57.7 cm. Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#dbh
- Height range: 10.4–22.8 m. Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#height
- Method: Power model fitted as log-linear regression (Table 3, models 1-2); no correction factor stated. Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#method
- Verification: read in the original source
- Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#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

Navarro-Martínez, J., Godínez-Jaimes, F., López-López, M. Á., Rosas-Acevedo, J. L., Juárez-López, A. L., & Reyes-Umaña, M. (2020). Ajuste de ecuaciones alométricas para estimar biomasa aérea en Pinus oocarpa y Quercus resinosa en Guerrero, México. Madera y Bosques, 26(1), e2611964.

- DOI: https://doi.org/10.21829/myb.2020.2611964
- Access: open access
- Copy we read: https://myb.ojs.inecol.mx/index.php/myb/article/download/e2611964/2039
- Every equation from this source: https://treeallometry.org/sources/navarro-2020/
- Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#source

## The facts, in the source's words

**Equation** (Table 5, model 2):

> B̂i = 0.01532 * (D² * H)^1.0958

Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#equation

**Trees measured** (Resumen / Table 2):

> 19 para la segunda

Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#quote-fit-n-trees

**Our note:** R2adj 0.979. The authors' statistically best model for Q. resinosa is the Box-Cox model 4, not added. Total aboveground biomass (stem, branches, foliage). No back-transformation correction factor is stated, none applied.

## 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 = 27.2, H = 14.1 | 387.8 | 387.8 | Computed from the printed form: computed from the published form |
| D = 44.6, H = 19.1 | 1,598 | 1,598 | Computed from the printed form: computed from the published form |

Cite: https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/#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: Navarro-Martínez, J., Godínez-Jaimes, F., López-López, M. Á., Rosas-Acevedo, J. L., Juárez-López, A. L., & Reyes-Umaña, M. (2020). Ajuste de ecuaciones alométricas para estimar biomasa aérea en Pinus oocarpa y Quercus resinosa en Guerrero, México. Madera y Bosques, 26(1), e2611964. https://doi.org/10.21829/myb.2020.2611964

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Quercus resinosa, power model, D²H (model 2)", checked 2026-11-02, https://treeallometry.org/equations/navarro-2020-q-resinosa-m2/. 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/navarro-2020-q-resinosa-m2.json
Report a problem: email info@restorationscope.com with the equation id (navarro-2020-q-resinosa-m2) and where the right value appears.