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Table 4 Percentage of total error (as variance) attributed to each sampling phase

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

   Regression equation based biomass BEF-based biomass
# Tree component Percentage of variance attributed to the first phase (plot selection and variability) Percentage of variance attributed to the second phase (regression model) Percentage of variance attributed to the first phase (plot selection and variability) Percentage of variance attributed to the second phase (BEF model)
1 Taproot + stump 62 38 63 37
2 Lateral roots 69 31 52 48
3 Root system (1 + 2) 80 20 75 25
4 Stem wood 89 11 95 5
5 Stem bark 54 46 59 41
6 Stem (4 + 5) 90 10 96 4
7 Branches 49 51 46 54
8 Foliage 35 65 16 84
9 Crown (7 + 8) 50 50 45 55
10 Shoot system (6 + 9) 90 10 89 11
11 Whole tree (3 + 10) 90 10 88 12
  1. The major components and their values are indicated in bold font