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Table 1 Regression coefficients (± SE), BEF values (± SE) and the fit statistics for each tree component and for total biomass

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 b0 (± SE) b1 (± SE) or BEF (Mg m−3) (± SE) R2 (%) Sy.x (Kg) CVr (%) MR (%)
Regression model
 1 Taproot + stump 1.3122 (±36.69 %)b 0.0045 (±4.44 %)c 87.93 7.94 33.57 1.1612
 2 Lateral roots – 1.0600 (±43.02 %)a 0.0051 (±3.92 %)c 91.09 8.05 33.47 1.7376
3 Root system (1 + 2) 0.2522 (±251.15 %) ns 0.0097 (±2.06 %) c 95.00 9.59 20.10 – 0.0709
 4 Stem wood 0.6616 (±173.08 %)ns 0.0251 (±1.59 %)c 97.52 19.66 15.84 0.0871
 5 Stem bark 0.1895 (±186.28 %)ns 0.0028 (±3.57 %)c 84.41 4.97 34.97 0.2638
6 Stem (4 + 5) 0.8511 (±147.84 %) ns 0.0279 (±1.79 %) c 97.58 21.89 15.83 0.1029
 7 Branches – 0.4569 (±332.74 %)ns 0.0114 (±5.26 %)c 82.14 27.54 49.55 0.7460
 8 Foliage 0.7602 (±15.85 %)c 0.0004 (±10.00 %)c 49.41 1.86 66.21 1.5472
9 Crown (7 + 8) 0.3033 (±515.66 %) ns 0.0118 (±5.08 %) c 82.36 25.11 43.01 – 0.3190
10 Shoot system (6 + 9) 1.1544 (±149.39 %) ns 0.0398 (±1.51 %) c 97.75 31.07 15.80 – 0.0364
11 Whole tree (3 + 10) 1.4066 (±156.29 %) ns 0.0494 (±1.62 %) c 97.64 34.92 14.29 – 0.0440
BEF model
 1 Taproot + stump 0.0000 0.1407 (±3.53 %)c 80.96 8.34 35.26 4.3080
 2 Lateral roots 0.0000 0.1162 (±4.43 %)c 80.11 10.75 44.70 2.7686
3 Root system (1 + 2) 0.0000 0.2569 (±2.66 %) c 92.36 11.49 24.08 3.6116
 4 Stem wood 0.0000 0.6569 (±1.04 %)c 98.54 16.72 13.48 0.0755
 5 Stem bark 0.0000 0.0765 (±3.81 %)c 77.52 5.10 35.92 5.5460
6 Stem (4 + 5) 0.0000 0.7334 (±0.95 %) c 98.85 18.77 13.57 0.0600
 7 Branches 0.0000 0.2928 (±5.20 %)c 74.54 29.10 52.35 2.7087
 8 Foliage 0.0000 0.0242 (±10.60 %)c 36.17 2.93 104.21 2.7751
9 Crown (7 + 8) 0.0000 0.3170 (±5.05 %) c 76.34 28.89 49.48 2.7138
10 Shoot system (6 + 9) 0.0000 1.0504 (±1.65 %) c 95.05 36.61 18.61 4.6507
11 Whole tree (3 + 10) 0.0000 1.3072 (±1.71 %) c 95.06 45.67 18.69 4.4466
  1. SE standard error (%), “c” = significant at α = 0.001; “b” = significant at α = 0.01; “a” = significant at α = 0.05; ns = not statistically significant at α = 0.05; the major components and their values are indicated in bold font