Coriaria arborea / Total biomass

Coriaria arborea, NZ, whole-plant biomass from RCD (Table 6)

Total biomassCoriaria arborea · CoriariaceaeNew ZealandplantationRead from the original paper

Equation

As printed (Table 6, Total biomass, Coriaria arborea)

y = 39.4x

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

Total biomass = 0.394 * DRC

DRC: Root collar / stem base diameter, cm

Open-spaced juvenile plants (2-year-old containerised plants on-grown for 3 years, sampled up to 5 years). The tables are headed 'at age 5 years' but the appendix figures show points from all harvest years, and the paper gives no n or RCD range for these fits, so none is recorded. x is root collar diameter in mm; biomass in g and height in m (units inferred from Table 2 and Appendix 1 means, which the equations reproduce; the paper does not print units beside the equations).

Source

Marden, M., Mason, N. W. H., Lambie, S., & Rowan, D. (2025). Total plant biomass, carbon stock, and species- and age-specific allometry for 12 of New Zealand's early-colonising indigenous shrub and tree species to 5 years of age. New Zealand Journal of Forestry Science, 55, 3.

doi:10.33494/nzjfs552025x387x · Open access · copy we read

0.82

R² · Table 6, Total biomass, Coriaria arborea, r² column

R²: 0.82
Method: ordinary least squares, linear through origin (y = mx)
Where: Taruheru River terrace, Gisborne, New Zealand
Last checked: 2026-11-02

Calculate

Root collar diameter (cm)

0.788

Total biomass (kg)

0.37

Carbon (kg), ×0.47

1.36

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 = 2	0.788	0.788	Computed from the printed form hand-computed from the published form (RCD in mm, mass in g, converted)
DRC = 6	2.36	2.36	Computed from the printed form hand-computed from the published form (RCD in mm, mass in g, converted)
DRC = 15	5.91	5.91	Computed from the printed form hand-computed from the published form (RCD in mm, mass in g, converted)

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Coriaria arborea, NZ, whole-plant biomass from RCD (Table 6)

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