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Table 1 Average tree density, stem diameter at 200 cm, height (cm) and aboveground biomass (AGB), coarse root biomass and total biomass stocks estimated using the best model (Model 2) in different ages of rubber plantation in North East India

From: Development and evaluation of robust tree biomass equations for rubber tree (Hevea brasiliensis) plantations in India

Stand age (yrs) Density (tree·ha−1) Diameter (cm) Height (cm) Biomass stocks
AGB (Mg·ha−1) Coarse root (Mg·ha−1) Total biomass (Mg·ha−1)
6 784 (6) 11.1 (1.48) 8.3 (0.68) 28.9 (18.9) 4.1 (1.0) 31.5 (18.2)
15 720 (11) 19.9 (1.32) 15.2 (0.61) 119.4 (16.8) 10.3 (0.9) 121.4 (16.2)
27 688 (11) 19.5 (1.48) 16.5 (0.68) 116.4 (18.9) 10.0 (1.0) 118.4 (18.2)
34 576 (25) 23.8 (1.35) 20.0 (0.62) 169.6 (17.3) 11.9 (1.0) 167.6 (16.6)
All ages 692 (44) 18.9 (0.88) 15.3 (0.60) 112.0 (10.7) 9.3 (0.6) 113.0 (10.3)
  1. Values in parentheses are standard errors of means