# Petrova et al. 2026: Aboveground biomass and its allometric models for the main and under storeys of the forest-swamp system in the Middle Urals

Petrova, I.V., Plukha, N.I., Usoltsev, V.A., et al. (2026). Aboveground biomass and its allometric models for the main and under storeys of the forest-swamp system in the Middle Urals. Forests of Russia and economy in them, 3(98), 118–134.

- DOI: https://doi.org/10.51318/fret.2026.98.3.012
- Access: open access
- Copy we read: https://usfeu.ru/media/filer_public/46/8f/468f8f54-0a39-4ff0-a7a5-0c995daa8d5b/12_petrova_i_dr_nadzemnaia_biomassa_i_ee2.pdf
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-01
- Page: https://treeallometry.org/sources/petrova-2026/

## Equations from this source (8)

### Betula pendula branches biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Branch biomass for Betula pendula, Russia. Inputs: DBH. DBH 1.1–17.1 cm. 18 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPbr: a0 = –4,348, a1 = 2,3432

Page: https://treeallometry.org/equations/petrova-2026-birch-br/

### Betula pendula foliage biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Foliage biomass for Betula pendula, Russia. Inputs: DBH. DBH 1.1–17.1 cm. 18 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPf: a0 = –3,6302, a1 = 1,7688

Page: https://treeallometry.org/equations/petrova-2026-birch-f/

### Betula pendula stem in bark biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Stem biomass for Betula pendula, Russia. Inputs: DBH. DBH 1.1–17.1 cm. 18 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPst: a0 = –1,9888, a1 = 2,1307

Page: https://treeallometry.org/equations/petrova-2026-birch-st/

### Betula pendula total aboveground biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Aboveground biomass for Betula pendula, Russia. Inputs: DBH. DBH 1.1–17.1 cm. 18 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPa: a0 = –1,7505, a1 = 2,1177

Page: https://treeallometry.org/equations/petrova-2026-birch-agb/

### Pinus sylvestris branches biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Branch biomass for Pinus sylvestris, Russia. Inputs: DBH. DBH 2.4–21.3 cm. 12 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPbr: a0 = –4,8556, a1 = 2,5829

Page: https://treeallometry.org/equations/petrova-2026-pine-br/

### Pinus sylvestris foliage biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Foliage biomass for Pinus sylvestris, Russia. Inputs: DBH. DBH 2.4–21.3 cm. 12 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPf: a0 = –3,0228, a1 = 1,6412

Page: https://treeallometry.org/equations/petrova-2026-pine-f/

### Pinus sylvestris stem in bark biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Stem biomass for Pinus sylvestris, Russia. Inputs: DBH. DBH 2.4–21.3 cm. 12 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPst: a0 = –2,4721, a1 = 2,261

Page: https://treeallometry.org/equations/petrova-2026-pine-st/

### Pinus sylvestris total aboveground biomass vs DBH (Eq. 4), forest-swamp, Middle Urals

Aboveground biomass for Pinus sylvestris, Russia. Inputs: DBH. DBH 2.4–21.3 cm. 12 trees.

As printed (Eq. (4) and Table 4, p. 126):

> lnPi = a0 + a1lnD (4); lnPa: a0 = –2,1517, a1 = 2,2508

Page: https://treeallometry.org/equations/petrova-2026-pine-agb/