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Table 3 Component biomass expansion factors (BEF h ), their variances (VAR BEF ), standard errors (SE), and 95% confidence intervals (CI) for Androstachys johnsonii trees

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

# Tree component BEF h (Mg m –3 ) VAR BEF (Mg 2m –6 ) SE (Mg m –3 ) SE (%) 95% CI (Mg m –3 ) 95% CI (%)
1 Taproot + stump 0.1407 3.6E-05 0.0060 4.2382 ± 0.0119 ±8.4764
2 Lateral roots 0.1162 4.4E-05 0.0067 5.7232 ±0.0133 ±11.4465
3 Root system (1 + 2) 0.2569 1.0E-04 0.0100 3.8930 ±0.0200 ±7.7860
4 Stem wood 0.6569 3.6E-04 0.0191 2.9046 ±0.0382 ±5.8092
5 Stem bark 0.0765 1.3E-05 0.0036 4.7534 ±0.0073 ±9.5068
6 Stem (4 + 5) 0.7334 4.4E-04 0.0210 2.8615 ±0.0420 ±5.7230
7 Branches 0.2928 3.1E-04 0.0177 6.0590 ±0.0355 ±12.1180
8 Foliage 0.0242 6.6E-06 0.0026 10.6242 ±0.0051 ±21.2483
9 Crown (7 + 8) 0.3170 3.6E-04 0.0190 5.9973 ±0.0380 ±11.9946
10 Shoot system (6 + 9) 1.0504 1.2E-03 0.0340 3.2345 ±0.0679 ±6.4690
11 Total tree (3 + 10) 1.3072 1.8E-03 0.0428 3.2736 ±0.0856 ±6.5472
  1. The major components and their values are indicated in bold font. SE, standard error; CI, confidence limit.
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