# Karaban et al. 2023: Biomass of gray alder trees and its allometric models in the conditions of the Arkhangelsk region

Karaban, A. A., Usoltsev, V. A., Tretyakov, S. V., Koptev, S. V., Paramonov, A. A., Tsvetkov, I. V., Davydov, A. V., & Tsepordey, I. S. (2023). Biomass of gray alder trees and its allometric models in the conditions of the Arkhangelsk region. Forests of Russia and economy in them, 2(85), 42–50.

- DOI: https://doi.org/10.51318/fret.2023.36.20.005
- Access: open access
- Copy we read: https://usfeu.ru/media/filer_public/31/1c/311c8894-375c-49bb-9c23-860c9d9a5c51/5_karaban_usoltsev_dr_biomassa_derevev_olkhi.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/karaban-2023/

## Equations from this source (6)

### Gray alder, Arkhangelsk: aboveground biomass from D (Table 2)

Aboveground biomass for Alnus incana, Russia. Inputs: DBH. DBH 3.6–16.9 cm. 50 trees.

As printed (Table 2, ln Pa row):

> ln Pa (1) –2,5641 2,4652 – – 0,867 0,310 (ln Pi = a0 + a1 ln D)

Page: https://treeallometry.org/equations/karaban-2023-agb-d/

### Gray alder, Arkhangelsk: branch biomass from D (Table 2)

Branch biomass for Alnus incana, Russia. Inputs: DBH. DBH 3.6–16.9 cm. 50 trees.

As printed (Table 2, ln Pb row):

> ln Pb (1) –4,4668 2,4038 – – 0,729 0,469 50 (ln Pi = a0 + a1 ln D)

Page: https://treeallometry.org/equations/karaban-2023-branch-d/

### Gray alder, Arkhangelsk: foliage biomass from D (Table 2)

Foliage biomass for Alnus incana, Russia. Inputs: DBH. DBH 3.6–16.9 cm. 50 trees.

As printed (Table 2, ln Pf row):

> ln Pf (1) –5,2476 1,9910 – – 0,639 0,478 (ln Pi = a0 + a1 ln D)

Page: https://treeallometry.org/equations/karaban-2023-foliage-d/

### Gray alder, Arkhangelsk: stem biomass (in bark) from D (Table 2)

Stem biomass for Alnus incana, Russia. Inputs: DBH. DBH 3.6–16.9 cm. 50 trees.

As printed (Table 2, ln Ps row):

> ln Ps (1) –2,8211 2,5081 – – 0,835 0,357 (ln Pi = a0 + a1 ln D)

Page: https://treeallometry.org/equations/karaban-2023-stem-d/

### Gray alder, European Russia pooled: aboveground biomass from D (Eq. 5)

Aboveground biomass for Alnus incana, Russia. Inputs: DBH.

As printed (Eq. (5), p. 46):

> ln Pa = –2,5395 + 2,4527 ln D; adjR2 = 0,939, SE = 0,26.

Page: https://treeallometry.org/equations/karaban-2023-agb-d-pooled/

### Gray alder, southern taiga and mixed-forest data (Kazimirov 1978, Miezīte 2011): root biomass from D and aboveground biomass (Table 2)

Root biomass for Alnus incana, Russia, Latvia. Inputs: DBH + AGB. 17 trees.

As printed (Table 2, ln Pr row, eq. (3)):

> ln Pr (3) 2,1294 –3,5935 2,4672 – 0,945 0,265 17 (ln Pr = a0 + a1 ln D + a3 ln Pa)

Page: https://treeallometry.org/equations/karaban-2023-bgb-d-agb/