# Coutinho et al. 2018: Simultaneous Equations to Estimate Aboveground Biomass of Pinus caribaea var. hondurensis

Coutinho, V. M., Sanquetta, C. R., Bittencourt, P. A., Silva, S. A., Proceke, K. H., Delarrmelina, W. M., & Moreau, J. (2018). Simultaneous Equations to Estimate Aboveground Biomass of Pinus caribaea var. hondurensis. Floresta e Ambiente, 25(3), e20160452.

- DOI: https://doi.org/10.1590/2179-8087.045216
- Access: open access
- Copy we read: http://www.scielo.br/pdf/floram/v25n3/2179-8087-floram-25-3-e20160452.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/coutinho-2018/

## Equations from this source (4)

### Pinus caribaea branch biomass from DBH (simultaneous fit)

Branch biomass for Pinus caribaea var. hondurensis, Brazil. Inputs: DBH. DBH 8.2–23.7 cm. 20 trees.

As printed (Table 5):

> bsbranches = β0+β1DBH+β2DBH2: 8.631, -1.213, 0.054

Page: https://treeallometry.org/equations/coutinho-2018-branches-sur/

### Pinus caribaea needle biomass from DBH and height (simultaneous fit)

Foliage biomass for Pinus caribaea var. hondurensis, Brazil. Inputs: DBH + Height. DBH 8.2–23.7 cm. 20 trees.

As printed (Table 5):

> bsneedles = β0+β1DBH+β2TH: -1.943, 0.160, 0.087

Page: https://treeallometry.org/equations/coutinho-2018-needles-sur/

### Pinus caribaea total aboveground biomass, sum of simultaneous component models

Aboveground biomass for Pinus caribaea var. hondurensis, Brazil. Inputs: DBH + Height + Wood density. DBH 8.2–23.7 cm. 20 trees.

As printed (Table 5):

> bstotal = bsneedles+bsbranches+bstrunk

Page: https://treeallometry.org/equations/coutinho-2018-total-sur/

### Pinus caribaea trunk (stem with bark) biomass from DBH, height and wood density (simultaneous fit)

Stem biomass for Pinus caribaea var. hondurensis, Brazil. Inputs: DBH + Height + Wood density. DBH 8.2–23.7 cm. 20 trees.

As printed (Table 5):

> bstrunk = β0+β1DBH+β2ht+β3ρ: -41.5, 1.760, 1.374, 39.377

Page: https://treeallometry.org/equations/coutinho-2018-trunk-sur/