# Parque Cerrado, total aboveground biomass, independent fit (Table 2)

Aboveground biomass equation for Parque Cerrado tree species (mixed), Brazil, from Santana et al. 2021. 97 trees. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

## Equation

As printed in Santana et al. 2021 (Table 2, p. 712):

> AGB = 0.21220 * DAP^2.01655 * Ht^0.18081

Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#equation

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

```
Aboveground biomass = 0.21220 * D^2.01655 * H^0.18081
```

Inputs: D = Diameter at breast height (1.3 m) (cm); H = Total tree height (m).
The source's own form: 0.21220 * DAP^2.01655 * Ht^0.18081, with DAP in cm, Ht in m; output in kg.
Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#canonical

## What it covers

- Output: Aboveground biomass, kg
- Taxon: Parque Cerrado tree species (mixed) (mixed species); mixed
- Where: Northwest Goiás, Parque Cerrado (Cerrado biome). Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#where
- Biomes: tropical, dryland
- Stand: natural
- Trees measured: 97. Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#n_trees
- Method: nonlinear least squares (Schumacher-Hall form), independent fit. Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#method
- Verification: read in the original source
- Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#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

Santana, G.M., Araujo, E.C.G., Sanquetta, C.R., Péllico Netto, S., Venturoli, F. (2021). Ajuste independente e simultâneo para estimar biomassa acima do solo no Cerrado, fitofisionomia Parque Cerrado. Revista em Agronegócio e Meio Ambiente, 14(3), 707-716.

- DOI: https://doi.org/10.17765/2176-9168.2021v14n3e8125
- Access: open access
- Copy we read: https://periodicos.unicesumar.edu.br/index.php/rama/article/view/8125
- Every equation from this source: https://treeallometry.org/sources/santana-2021/
- Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#source

## The facts, in the source's words

**Equation** (Table 2, p. 712):

> AGB = 0.21220 * DAP^2.01655 * Ht^0.18081

Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#equation

**Trees measured** (2.1 Caracterização da área e coleta de dados, p. 709):

> 97 indivíduos presentes em dez parcelas de 10 metros x 10 metros

Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#quote-fit-n-trees

**Our note:** Total aboveground biomass includes stem with bark, branches and leaves. Equation printed with DAP and Ht as variables; units are not stated beside the model and are read as DAP in cm and Ht in m (the paper gives the DAP >= 5 cm inclusion criterion and biomass in kg); magnitudes are consistent. Adjusted R2 (not R2) is printed, so fit.r2 is left out. The paper reports no DAP or height range of the fitted trees (only the DAP >= 5 cm inclusion criterion), so none is given. Dry biomass from 97 destructively sampled trees in ten 10 m x 10 m plots.

## 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 = 5, H = 4 | 7 | 7 | Computed from the printed form: hand-computed from the published form (coefficients as printed) |
| D = 10, H = 6 | 30.5 | 30.5 | Computed from the printed form: hand-computed from the published form (coefficients as printed) |
| D = 20, H = 9 | 132.7 | 132.7 | Computed from the printed form: hand-computed from the published form (coefficients as printed) |

Cite: https://treeallometry.org/equations/santana-2021-agb-independent/#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: Santana, G.M., Araujo, E.C.G., Sanquetta, C.R., Péllico Netto, S., Venturoli, F. (2021). Ajuste independente e simultâneo para estimar biomassa acima do solo no Cerrado, fitofisionomia Parque Cerrado. Revista em Agronegócio e Meio Ambiente, 14(3), 707-716. https://doi.org/10.17765/2176-9168.2021v14n3e8125

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Parque Cerrado, total aboveground biomass, independent fit (Table 2)", checked 2026-11-02, https://treeallometry.org/equations/santana-2021-agb-independent/. 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/santana-2021-agb-independent.json
Report a problem: email info@restorationscope.com with the equation id (santana-2021-agb-independent) and where the right value appears.