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Table 5 Comparision of bias between regression equation based and BEF-based biomass estimates

From: Live above- and belowground biomass of a Mozambican evergreen forest: a comparison of estimates based on regression equations and biomass expansion factors

#

Tree component

Bias (%)a

Bias (%)b

1

Taproot + stump

– 3.3436

– 5.6745

2

Lateral roots

– 3.3643

13.8733

3

Root system (1 + 2)

– 3.3540

4.1660

4

Stem wood

10.0738

1.3651

5

Stem bark

– 9.3876

– 1.4220

6

Stem (4 + 5)

8.9983

0.3591

7

Branches

– 9.4311

0.7147

8

Foliage

– 23.2792

– 81.7205

9

Crown (7 + 8)

– 10.0298

– 2.8493

10

Shoot system (6 + 9)

– 2.5149

5.7208

11

Whole tree (3 + 10)

– 2.6778

5.4193

  1. Superscripts a and b indicate biases related to regression equations based and BEF-based biomass estimates, respectively; the major components and their values are indicated in bold font