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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 2  m –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.