# De Cauwer et al. 2020: Improving the knowledge base for tropical dry forest management in southern Africa: Regional volume models for Pterocarpus angolensis

De Cauwer, V., Beeckman, H., Kleinn, C., Moses, M., Nott, A., Seifert, T., Muys, B. (2020). Improving the knowledge base for tropical dry forest management in southern Africa: Regional volume models for Pterocarpus angolensis. Forest Ecology and Management, 477, 118485.

- DOI: https://doi.org/10.1016/j.foreco.2020.118485
- Access: open access
- Copy we read: https://lirias.kuleuven.be/retrieve/00adf4e9-cc77-4da0-88bc-0454a2f00a1c
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/de-cauwer-2020/

## Equations from this source (4)

### Merchantable stem volume from DBH (Model 4, Table 7)

Stem volume for Pterocarpus angolensis, Namibia, Angola. Inputs: DBH. DBH 5–92 cm. 356 trees.

As printed (Table 7, Model 4):

> Vmer = exp(a + b 1 *(lnDBH)2 + b 2 *(lnDBH)3 ... -7.533 *** 0.896 *** -0.110 ***

Page: https://treeallometry.org/equations/de-cauwer-2020-vmer-d/

### Merchantable stem volume from DBH and height (Model 6, Table 7)

Stem volume for Pterocarpus angolensis, Namibia, Angola. Inputs: DBH + Height. DBH 5–92 cm. 340 trees.

As printed (Table 7, Model 6):

> Vmer = exp(a + b 1 *(lnDBH)2 + b 2 *(lnDBH)3+ b 3 *lnH) ... -7.821 *** 0.599 *** -0.064 *** 0.800 ***

Page: https://treeallometry.org/equations/de-cauwer-2020-vmer-d-h/

### Total wood volume from DBH (Model 1, Table 5)

Total volume for Pterocarpus angolensis, Namibia, Angola. Inputs: DBH. DBH 9–73 cm. 69 trees.

As printed (Table 5, Model 1):

> V tot = exp(a + b 1 *lnDBH) ... -8.796 *** 2.441 ***

Page: https://treeallometry.org/equations/de-cauwer-2020-vtot-d/

### Total wood volume from DBH and height (Model 3, Table 5)

Total volume for Pterocarpus angolensis, Namibia, Angola. Inputs: DBH + Height. DBH 9–73 cm. 69 trees.

As printed (Table 5, Model 3):

> V tot = exp(a + b 1 *lnDBH + b 2 *H) ... -8.626 *** 2.232 *** 0.041 ***

Page: https://treeallometry.org/equations/de-cauwer-2020-vtot-d-h/