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Table 3 Allometric relationships between RCD and total root length, and total root biomass for roots > 1 mm and > 2 mm diameter

From: Biomass and root attributes of eight of New Zealand’s most common indigenous evergreen conifer and broadleaved forest species during the first 5 years of establishment

Species Root size class Root length Root biomass
   r 2 P Equation r 2 P Equation
Agathis australis (kauri) > 1 mm 0.780 < 0.001 y = 0.542 exp (0.113x) 0.879 < 0.001 y = 1.173 exp (0.137x)
> 2 mm 0.758 < 0.001 y = 0.161 exp (0.127x) 0.860 < 0.001 y = 0.879 exp (0.144x)
Alectryon excelsus (titoki) > 1 mm 0.797 < 0.001 y = 8.179 exp (0.057x) 0.851 < 0.001 y = 17.629 exp (0.062x)
> 2 mm 0.763 < 0.001 y = 1.842 exp (0.057x) 0.851 < 0.001 y = 11.206 exp (0.066x)
Dacrycarpus dacrydioide (kahikatea) > 1 mm 0.783 < 0.001 y = 12.159 exp (0.045x) 0.891 < 0.001 y = 12.816 exp (0.053x)
> 2 mm 0.704 < 0.001 y = 3.090 exp (0.047x) 0.897 < 0.001 y = 8.136 exp (0.057x)
Dacrydium cupressinum (rimu) > 1 mm 0.816 < 0.001 y = 2.743 exp (0.080x) 0.925 < 0.001 y = 3.514 exp (0.098x)
> 2 mm 0.829 < 0.001 y = 0.527 exp (0.088x) 0.946 < 0.001 y = 1.793 exp (0.106x)
Podocarpus totara (totara) > 1 mm 0.461 < 0.001 y = 11.481 exp (0.040x) 0.730 < 0.001 y = 15.073 exp (0.049x)
> 2 mm 0.659 < 0.001 y = 1.921 exp (0.046x) 0.780 < 0.001 y = 8.786 exp (0.053x)
Prumnopitys ferruginea (miro) > 1 mm 0.831 < 0.001 y = 2.731 exp (0.095x) 0.909 < 0.001 y = 3.627 exp (0.114x)
> 2 mm 0.855 < 0.001 y = 0.357 exp (0.112x) 0.931 < 0.001 y = 1.673 exp (0.127x)
Prumnopitus taxifolia (matai) > 1 mm 0.779 < 0.001 y = 2.699 exp (0.101x) 0.789 < 0.001 y = 4.321 exp (0.102x)
> 2 mm 0.515 < 0.001 y = 0.359 exp (0.124x) 0.808 < 0.001 y = 2.204 exp (0.111x)
Vitex lucens (puriri) > 1 mm 0.812 < 0.001 y = 13.037 exp (0.037x) 0.886 < 0.001 y = 25.990 exp (0.038x)
> 2 mm 0.723 < 0.001 y = 4.002 exp (0.033x) 0.878 < 0.001 y = 21.548 exp (0.038x)