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Table IV

Parameter estimates for allometric equation ln (Y) = a + bln (X) using linear regression. Parameters a, b, and c are significant at the 0.01 level. AB is aboveground biomass (dry weight); SBB is stem + branches biomass; FB is foliage biomass; BB is belowground biomass; TB is total biomass; H is total height in cm; D is basal diameter in cm, D2 in cm2 and D2H in cm3.

Equation Y X a b c s.e. (a) s.e. (b) s.e. (c) SEE FI SEE 2/2 (%)
1 AB H –13.560 2.302 0.119 0.032 0.935 0.513 0.003 0.132 41.8
2 AB D –3.986 2.578 0.021 0.023 0.971 0.351 0.002 0.062 27.5
3 AB D2 –3.972 1.294 0.019 0.011 0.977 0.312 0.002 0.049 26.6
4 AB D2H * –7.488 0.852 0.021 0.006 0.984 0.262 0.002 0.034 21.3
5 AB D,H –7.441 1.717 0.841 0.194 0.052 0.047 0.983 0.262 0.002 0.034 21.3
6 SBB H –14.352 2.455 0.118 0.031 0.944 0.510 0.003 0.130 41.7
7 SBB D –4.163 2.767 0.022 0.024 0.975 0.346 0.002 0.060 28.0
8 SBB D2 –4.229 1.378 0.022 0.012 0.974 0.353 0.002 0.062 30.9
9 SBB D2H * –7.956 0.908 0.022 0.006 0.986 0.267 0.001 0.036 21.9
10 SBB D,H –8.061 1.785 0.932 0.202 0.055 0.049 0.985 0.268 0.001 0.036 21.9
11 FB H –12.876 1.792 0.117 0.032 0.900 0.541 0.002 0.146 43.5
12 FB D –5.465 2.117 0.019 0.021 0.968 0.310 0.001 0.048 26.7
13 FB D2 –5.512 1.060 0.021 0.011 0.963 0.329 0.001 0.054 28.5
14 FB D2H –8.340 0.692 0.026 0.007 0.965 0.320 0.001 0.051 26.2
15 FB D,H * –6.881 1.762 0.341 0.229 0.062 0.055 0.966 0.313 0.001 0.049 26.0
16 BB H –12.243 1.890 0.114 0.030 0.914 0.513 0.003 0.131 41.3
17 BB D –4.376 2.175 0.022 0.024 0.956 0.368 0.002 0.068 29.9
18 BB D2 –4.363 1.089 0.022 0.012 0.961 0.349 0.002 0.061 29.7
19 BB D2H –7.323 0.717 0.026 0.007 0.966 0.321 0.002 0.052 26.8
20 BB D,H * –6.788 1.572 0.588 0.239 0.065 0.058 0.967 0.317 0.002 0.050 26.6
21 TB H –12.411 2.148 0.112 0.030 0.939 0.459 0.006 0.105 36.8
22 TB D –3.439 2.398 0.020 0.022 0.971 0.329 0.004 0.054 26.5
23 TB D2 –3.443 1.202 0.019 0.010 0.976 0.301 0.004 0.045 25.6
24 TB D2H * –6.714 0.792 0.022 0.006 0.981 0.262 0.003 0.034 21.7
25 TB D,H –6.134 1.745 0.653 0.198 0.053 0.048 0.981 0.262 0.003 0.034 21.7

s.e.: Standard error of the estimated parameters; Raj2: adjusted coefficient of determination; SEE: standard error of the estimate; FI: Furnival’s index; SEE2/2: correction term added to the intercept before back-transformation; (%): mean percent standard error. The best equation is denoted by asterisks.