# Santos et al. 2020: Species-specific equations: greater precision in commercial volume estimation in managed forests in the Amazon

Santos, M.F. dos, Figueiredo Filho, A., Gama, J.R.V., Retslaff, F.A. de S., Costa, D.L. da (2020). Species-specific equations: greater precision in commercial volume estimation in managed forests in the Amazon. CERNE, 26(3), 315-330.

- DOI: https://doi.org/10.1590/01047760202026032741
- Access: open access
- Copy we read: https://www.scielo.br/j/cerne/a/wVP9VN9KTRZwBYfg8yngfPL/?lang=en&format=pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/santos-2020/

## Equations from this source (8)

### Commercial stem volume from DBH, Astronium lecointei (species-specific, Table 2)

Stem volume for Astronium lecointei, Brazil. Inputs: DBH. DBH from 50 cm. 1,222 trees.

As printed (Table 2, SSEs rows):

> A. lecointei vc = exp(-6.92187 + 2.02237ln(DBH)) 0.63 2.164 26.7

Page: https://treeallometry.org/equations/santos-2020-astronium-lecointei/

### Commercial stem volume from DBH, Couratari (species-specific, Table 2)

Stem volume for Couratari, Brazil. Inputs: DBH. DBH from 50 cm. 2,974 trees.

As printed (Table 2, SSEs rows):

> Couratari sp. vc = exp(-5.53516 + 1.71104ln(DBH)) 0.48 2.635 31.0

Page: https://treeallometry.org/equations/santos-2020-couratari/

### Commercial stem volume from DBH, Hymenaea courbaril (species-specific, Table 2)

Stem volume for Hymenaea courbaril, Brazil. Inputs: DBH. DBH from 50 cm. 1,487 trees.

As printed (Table 2, SSEs rows):

> H. courbaril vc = exp(-6.24458 + 1.90015ln(DBH)) 0.69 2.860 21.2

Page: https://treeallometry.org/equations/santos-2020-hymenaea-courbaril/

### Commercial stem volume from DBH, Hymenolobium petraeum (species-specific, Table 2)

Stem volume for Hymenolobium petraeum, Brazil. Inputs: DBH. DBH from 50 cm. 247 trees.

As printed (Table 2, SSEs rows):

> H. petraeum vc = exp(-7.22502 + 2.09783ln(DBH)) 0.61 5.567 36.4

Page: https://treeallometry.org/equations/santos-2020-hymenolobium-petraeum/

### Commercial stem volume from DBH, Lecythis lurida (species-specific, Table 2)

Stem volume for Lecythis lurida, Brazil. Inputs: DBH. DBH from 50 cm. 2,836 trees.

As printed (Table 2, SSEs rows):

> L. lurida vc = exp(-6.78776 + 1.95013ln(DBH)) 0.62 1.686 27.5

Page: https://treeallometry.org/equations/santos-2020-lecythis-lurida/

### Commercial stem volume from DBH, Manilkara huberi (species-specific, Table 2)

Stem volume for Manilkara huberi, Brazil. Inputs: DBH. DBH from 50 cm. 6,582 trees.

As printed (Table 2, SSEs rows):

> M. huberi vc = exp(-5.95341 + 1.76982ln(DBH)) 0.60 1.759 28.4

Page: https://treeallometry.org/equations/santos-2020-manilkara-huberi/

### Commercial stem volume from DBH, Mezilaurus itauba (species-specific, Table 2)

Stem volume for Mezilaurus itauba, Brazil. Inputs: DBH. DBH from 50 cm. 593 trees.

As printed (Table 2, SSEs rows):

> M. itauba vc = exp(-7.25817 + 2.05543ln(DBH)) 0.68 1.712 26.2

Page: https://treeallometry.org/equations/santos-2020-mezilaurus-itauba/

### Commercial stem volume from DBH, Vochysia maxima (species-specific, Table 2)

Stem volume for Vochysia maxima, Brazil. Inputs: DBH. DBH from 50 cm. 1,541 trees.

As printed (Table 2, SSEs rows):

> V. maxima vc = exp(-6.66554 + 1.90852ln(DBH)) 0.55 3.027 34.0

Page: https://treeallometry.org/equations/santos-2020-vochysia-maxima/