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Official Journal of the Japan Wood Research Society

Table 8 Relationship between transverse shrinkage and basic density (BD) for each site and combined sites of Melia azedarach

From: Transverse shrinkage variations within tree stems of Melia azedarach planted in northern Vietnam

Variable

 

Linear regression model y = ax + b

n

α T

α R

α T/αR

a

b

r

a

b

r

a

b

r

Site 1

90

11.25

1.95

0.76***

12.33

− 1.14

0.86***

− 2.57

2.77

− 0.59***

Site 2

90

12.58

1.78

0.66***

13.10

− 1.16

0.76***

− 1.97

2.48

− 0.40***

Combined sites

180

12.63

1.56

0.72***

13.31

− 1.41

0.82***

− 2.43

2.69

− 0.53***

  1. n number of wood specimen
  2. α T tangential shrinkage, αR radial shrinkage, αT/αR tangential/radial shrinkage ratio, r correlation coefficient
  3. *** p < 0.001