Table 4 Correlation coefficient of each SSN type of different morphometric dimensions

 A

1

 B

0.988912

1

 C

0.850258

0.841722

1

 D

0.980342

0.98981

0.768303

1

 A

1

 B

0.597196

1

 C

0.279145

0.143823

1

 D

−0.29093

0.537122

0.049629

1

 A

1

 B

0.972381

1

 C

0.692801

0.828927

1

VD

0.401379

0.599059

0.927954

1

 A

1

 B

0.970608

1

 C

0.980641

0.98719

1

 D

0.767034

0.881222

0.85935

1

 A

1

 B

no value

1

 C

no value

no value

1

 D

no value

no value

no value

1

A

1

 B

0.997069

1

 C

−0.22608

−0.22243

1

 D

−0.89137

−0.877

−0.20751

1