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Table 9 Linear regression test of dependence of root-to-shoot ratio on diameter at breast height (DBH), total height (TH), aboveground biomass (AGB), belowground biomass (BGB), and total biomass (TB) in Androstachys johnsonii trees

From: Tree component biomass expansion factors and root-to-shoot ratio of Lebombo ironwood: measurement uncertainty

# Regression equation b 0 (± SE) b 1 (± SE) Probability Adjusted R 2
1 R/S = b0 + b1DBH 0.24051 (±0.01080) 0.00006 (±0.00057) 0.9154 – 0.0109
2 R/S = b0 + b1H 0.27807 (±0.02454) – 0.00296 (±0.00196) 0.1347 0.0137
3 R/S = b0 + b1AGB 0.27015 (±0.00662) 0.00001 (±0.00003) 0.7812 – 0.0101
4 R/S = b0 + b1BGB 0.23354 (±0.00634) 0.00017 (±0.00010) 0.0997 0.0188
5 R/S = b0 + b1TB 0.23876 (±0.00659) 0.00001(±0.00002) 0.5802 – 0.0076
  1. b0 and b1, regression parameters; SE, standard error; probability refers to the significance of the regression.
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