# Poudel & Temesgen 2016: Methods for estimating aboveground biomass and its components for Douglas-fir and lodgepole pine trees

Poudel, K. P., & Temesgen, H. (2016). Methods for estimating aboveground biomass and its components for Douglas-fir and lodgepole pine trees. Canadian Journal of Forest Research, 46(1), 77-87.

- DOI: https://doi.org/10.1139/cjfr-2015-0256
- Access: open access
- Copy we read: https://utoronto.scholaris.ca/bitstreams/36d392bb-40cc-4598-b73c-6745768b0acf/download
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/poudel-2016/

## Equations from this source (8)

### Douglas-fir bole biomass, simple SUR (D only)

Stem biomass for Pseudotsuga menziesii, United States. Inputs: DBH. DBH 19.3–114 cm. 22 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Douglas-fir):

> Bole = exp(a11 + a12*X1); a11 = -0.349, a12 = 1.925

Page: https://treeallometry.org/equations/poudel-2016-df-stem/

### Douglas-fir branch biomass, simple SUR (D only)

Branch biomass for Pseudotsuga menziesii, United States. Inputs: DBH. DBH 19.3–114 cm. 22 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Douglas-fir):

> Branch = exp(a31 + a32*X1); a31 = -2.604, a32 = 1.942

Page: https://treeallometry.org/equations/poudel-2016-df-branch/

### Douglas-fir foliage biomass, simple SUR (D only)

Foliage biomass for Pseudotsuga menziesii, United States. Inputs: DBH. DBH 19.3–114 cm. 22 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Douglas-fir):

> Foliage = exp(a41 + a42*X1); a41 = -3.242, a42 = 1.758

Page: https://treeallometry.org/equations/poudel-2016-df-foliage/

### Douglas-fir total aboveground biomass, simple SUR (D only)

Aboveground biomass for Pseudotsuga menziesii, United States. Inputs: DBH. DBH 19.3–114 cm. 22 trees.

As printed (Eq. 6 and Table 3, Simple SUR, Douglas-fir):

> Total = Σ exp(aij + aij*X1 ...) over bole, bark, branch and foliage; simple SUR uses X1 = ln(DBH) only

Page: https://treeallometry.org/equations/poudel-2016-df-agb/

### Lodgepole pine bole biomass, simple SUR (D only)

Stem biomass for Pinus contorta, United States. Inputs: DBH. DBH 13.5–42.9 cm. 33 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Lodgepole pine):

> Bole = exp(a11 + a12*X1); a11 = -2.374, a12 = 2.373

Page: https://treeallometry.org/equations/poudel-2016-lp-stem/

### Lodgepole pine branch biomass, simple SUR (D only)

Branch biomass for Pinus contorta, United States. Inputs: DBH. DBH 13.5–42.9 cm. 33 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Lodgepole pine):

> Branch = exp(a31 + a32*X1); a31 = -3.384, a32 = 2.202

Page: https://treeallometry.org/equations/poudel-2016-lp-branch/

### Lodgepole pine foliage biomass, simple SUR (D only)

Foliage biomass for Pinus contorta, United States. Inputs: DBH. DBH 13.5–42.9 cm. 33 trees.

As printed (Eqs. 2-5 (X1 = ln DBH) and Table 3, Simple SUR, Lodgepole pine):

> Foliage = exp(a41 + a42*X1); a41 = -2.472, a42 = 1.637

Page: https://treeallometry.org/equations/poudel-2016-lp-foliage/

### Lodgepole pine total aboveground biomass, simple SUR (D only)

Aboveground biomass for Pinus contorta, United States. Inputs: DBH. DBH 13.5–42.9 cm. 33 trees.

As printed (Eq. 6 and Table 3, Simple SUR, Lodgepole pine):

> Total = Σ exp(aij + aij*X1 ...) over bole, bark, branch and foliage; simple SUR uses X1 = ln(DBH) only

Page: https://treeallometry.org/equations/poudel-2016-lp-agb/