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Table 3 The overall association among dominant tree populations in different development stages

From: Interspecific associations of dominant tree populations in a virgin old-growth oak forest in the Qinling Mountains, China

Development stages

δ 2 i

S 2 T

Variance ratio (V)

W statistic

χ 2 (\(\chi_{0.95}^{2}\), N, \(\chi_{0.05}^{2}\), N)

Overall association

Juvenile

1.785

1.320

0.740

36.979

(34.765,67.505) N = 50

No significant negative

Medium

1.918

1.560

0.813

40.678

No significant negative

Large

1.003

0.680

0.678

31.857

Significantly negative

All

2.130

1.434

0.673

33.659

Significantly negative