Skip to main content

Table 6 Linear regression test for dependence of biomass expansion factors (BEF) on total tree height (TH) in Androstachys johnsonii

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

BEF = b 0 + b 1 TH
# Tree component b 0 (± SE) b 1 (± SE) Probability Adjusted R 2
1 Taproot + stump 0.2884 (±0.0248) – 0.0120 (±0.0020) 0.0000 0.2787
2 Lateral roots 0.1178 (±0.0304) – 0.0001 (±0.0024) 0.9585 – 0.0110
3 Root system (1 + 2) 0.4061 (±0.0371) – 0.0121 (±0.0030) 0.0001 0.1456
4 Stem wood 0.6697 (±0.0404) – 0.0010 (±0.0032) 0.7486 – 0.0098
5 Stem bark 0.1018 (±0.0170) – 0.0021 (±0.0014) 0.1345 0.0137
6 Stem (4 + 5) 0.7715 (±0.0409) – 0.0031 (±0.0033) 0.3461 – 0.0011
7 Branches 0.4745 (±0.0844) – 0.0147 (±0.0068) 0.0314 0.0394
8 Foliage 0.1142 (±0.0118) – 0.0073 (±0.0009) 0.0000 0.3911
9 Crown (7 + 8) 0.5887 (±0.0900) – 0.0221 (±0.0072) 0.0029 0.0835
10 Shoot system (6 + 9) 1.3603 (±0.0969) – 0.0251 (±0.0077) 0.0016 0.0939
11 Total tree (3 + 10) 1.7664 (±0.1230) – 0.0373 (±0.0098) 0.0003 0.1267
  1. The major components and their values are indicated in bold font. b0 and b1, regression parameters; SE, standard error; probability refers to the significance of the regression.
\