Official Journal of the Japan Wood Research Society
From: Transverse shrinkage variations within tree stems of Melia azedarach planted in northern Vietnam
Variable | Description | n | BD (g/cm3) | α T (%) | α R (%) | α T/αR |
---|---|---|---|---|---|---|
Radial position from pith (%) | 10 | 60 | 0.39 ± 0.001c | 6.34 ± 0.07c | 3.69 ± 0.09c | 1.76 ± 0.03a |
50 | 60 | 0.44 ± 0.001b | 7.22 ± 0.09b | 4.56 ± 0.06b | 1.59 ± 0.02b | |
90 | 60 | 0.47 ± 0.001a | 7.61 ± 0.08a | 4.90 ± 0.07a | 1.56 ± 0.02b | |
Height above the ground (m) | 0.3 | 36 | 0.45 ± 0.01a | 7.30 ± 0.12a | 4.52 ± 0.13a | 1.65 ± 0.04a |
1.3 | 36 | 0.43 ± 0.01a | 7.14 ± 0.12a | 4.32 ± 0.14a | 1.69 ± 0.04a | |
3.3 | 36 | 0.43 ± 0.01a | 7.03 ± 0.15a | 4.28 ± 0.13a | 1.67 ± 0.03a | |
5.3 | 36 | 0.42 ± 0.01a | 6.87 ± 0.14a | 4.38 ± 0.13a | 1.59 ± 0.03a | |
7.3 | 36 | 0.44 ± 0.01a | 6.93 ± 0.14a | 4.41 ± 0.11a | 1.58 ± 0.03a | |
Site | 1 | 90 | 0.42 ± 0.01b | 6.73 ± 0.08b | 4.10 ± 0.08b | 1.68 ± 0.02a |
2 | 90 | 0.44 ± 0.01a | 7.37 ± 0.08a | 4.67 ± 0.07a | 1.60 ± 0.02b | |
Mean | 180 | 0.43 ± 0.01 | 7.05 ± 0.06 | 4.38 ± 0.06 | 1.64 ± 0.02 |