# Pienaar et al. 2025: Allometric equations for biomass and carbon pool estimation in short rotation Pinus radiata stands of the Western Cape, South Africa

Pienaar, L. O., Calama, R., Olivar, J., et al. (2025). Allometric equations for biomass and carbon pool estimation in short rotation Pinus radiata stands of the Western Cape, South Africa. European Journal of Forest Research, 144, 855–873.

- DOI: https://doi.org/10.1007/s10342-024-01730-9
- Access: open access
- Copy we read: https://link.springer.com/article/10.1007/s10342-024-01730-9
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/pienaar-2025/

## Equations from this source (7)

### Radiata pine branch from DBH (Eq. 8)

Branch biomass for Pinus radiata, South Africa. Inputs: DBH. DBH 10.4–38.9 cm.

As printed (Table 3):

> Branch, Eq. 8, Ln(DBH): β0 = -3.432, β1 = 2.09, CF = 1.093

Page: https://treeallometry.org/equations/pienaar-2025-branch-eq8/

### Radiata pine needle from DBH (Eq. 8)

Foliage biomass for Pinus radiata, South Africa. Inputs: DBH. DBH 10.4–38.9 cm.

As printed (Table 3):

> Needle, Eq. 8, Ln(DBH): β0 = -2.481, β1 = 1.624, CF = 1.057

Page: https://treeallometry.org/equations/pienaar-2025-foliage-eq8/

### Radiata pine stemwood from DBH (Eq. 8)

Stem biomass for Pinus radiata, South Africa. Inputs: DBH. DBH 10.4–38.9 cm.

As printed (Table 3):

> Stemwood, Eq. 8, Ln(DBH): β0 = -2.557, β1 = 2.3, CF = 1.033

Page: https://treeallometry.org/equations/pienaar-2025-stem-eq8/

### Radiata pine stemwood from DBH²H (Eq. 10)

Stem biomass for Pinus radiata, South Africa. Inputs: DBH + Height. DBH 10.4–38.9 cm.

As printed (Table 3):

> Stemwood, Eq. 10, Ln(DBH2H): β0 = -3.607, β1 = 0.911, CF = 1.029

Page: https://treeallometry.org/equations/pienaar-2025-stem-eq10/

### Radiata pine total aboveground from DBH (Eq. 8)

Aboveground biomass for Pinus radiata, South Africa. Inputs: DBH. DBH 10.4–38.9 cm. 20 trees.

As printed (Table 3):

> Total, Eq. 8, Ln(DBH): β0 = -1.385, β1 = 2.067, CF = 1.032

Page: https://treeallometry.org/equations/pienaar-2025-total-eq8/

### Radiata pine total aboveground from DBH, H (Eq. 9)

Aboveground biomass for Pinus radiata, South Africa. Inputs: DBH + Height. DBH 10.4–38.9 cm. 20 trees.

As printed (Table 3):

> Total, Eq. 9, Ln(DBH), Ln(H): β0 = -2.09, β1 = 1.753, β2 = 0.604, CF = 1.031

Page: https://treeallometry.org/equations/pienaar-2025-total-eq9/

### Radiata pine total aboveground from DBH²H (Eq. 10)

Aboveground biomass for Pinus radiata, South Africa. Inputs: DBH + Height. DBH 10.4–38.9 cm. 20 trees.

As printed (Table 3):

> Total, Eq. 10, Ln(DBH2H): β0 = -2.31, β1 = 0.817, CF = 1.03

Page: https://treeallometry.org/equations/pienaar-2025-total-eq10/