Sambucus racemosa / Aboveground biomass

Sambucus racemosa, aboveground dry mass vs base diameter (Model 1)

Aboveground biomassSambucus racemosa · SambucaceaeRussianaturalRead from the original paper

Equation

As printed (Eq. (1)/(2) and Table 2 (p. 10-11))

lnPag = a0 + a1lnD0; Sambucus racemosa: a0 = -2,559, a1 = 4,186, BaskCF = 1,62

In this library's units, ready to compute (kg)

Aboveground biomass = 1.62 * exp(-2.559 + 4.186 * ln(DRC))

DRC: Root collar / stem base diameter, cm

Understory plant (small tree/shrub) under Scots pine. Output in kg: the text states kg for P; Table 1 headings say g, but the kg reading matches the ranges in Table 1 (e.g. Sambucus Pag max 943 g = 0.943 kg). Predictor is base diameter D0 (root collar), mapped to canonical DRC. n=7 (<10): authors treat as preliminary. Best-supported species in the paper (Q2CV 0.53-0.86).

Source

Kartashova, N.P., Sheshnitsan, S.S., Tsaregorodtsev, A.V. (2026). Allometric models of biomass of understory trees and shrubs in pine stands of Voronezh Oblast. Forestry Engineering Journal (Lesotekhnicheskii zhurnal), 16(3), 6–19.

doi:10.34220/issn.2222-7962/2026.3/1 · Open access · copy we read

Sambucus racemosa n = 7

Trees measured · Table 1, p. 9

Trees measured: 7
R²: 0.903
Correction factor: 1.62 (applied)
Method: log-log regression (OLS on natural logs), Baskerville correction factor
Where: Prigorodnoye Forestry, Levoberezhnoe District Forestry, Voronezh Oblast (pine stands, forest-steppe)
Last checked: 2026-11-01

Calculate

Root collar diameter (cm)

0.00689

Aboveground biomass (kg)

0.00324

Carbon (kg), ×0.47

0.0119

CO₂e (kg), ×44/12

Checks this equation passes

On every build, the library's form and the paper's own form (in its units) must both give these values within 1%.

Inputs	Expected	We get	From
DRC = 0.5	0.00689	0.00689	Computed from the printed form hand-computed from the published form (Table 2 coefficients, Baskerville factor BaskCF applied)
DRC = 1	0.125	0.125	Computed from the printed form hand-computed from the published form (Table 2 coefficients, Baskerville factor BaskCF applied)
DRC = 1.5	0.684	0.684	Computed from the printed form hand-computed from the published form (Table 2 coefficients, Baskerville factor BaskCF applied)

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Sambucus racemosa, aboveground dry mass vs base diameter (Model 1)

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