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Table 2 The growth parameters of C. lanceolata as affected by a high planting density under soils that were first (control) and continuously planted with Chinese fir (rotation)

From: Continuous planting under a high density enhances the competition for nutrients among young Cunninghamia lanceolata saplings

Soils

Planting density

Height (cm)

Base stem diameter (mm)

Root mass (g)

Stem mass (g)

Leaf mass (g)

Total mass (g)

Aboveground/belowground ratio

Control

Low

59.52 ± 0.72 d

10.52 ± 0.12 c

29.48 ± 0.46 b

20.78 ± 0.34 d

35.82 ± 1.18 c

84.21 ± 1.73 c

1.92 ± 0.05 b

 

High

47.17 ± 0.93 b

7.50 ± 0.13 b

9.46 ± 0.41 a

7.23 ± 0.30 b

13.05 ± 0.32 b

29.74 ± 0.68 b

2.18 ± 0.10 c

Rotation

Low

55.51 ± 0.73 c

10.21 ± 0.12 c

28.24 ± 0.36 b

18.01 ± 0.36 c

33.16 ± 1.23 c

81.28 ± 0.93 c

1.82 ± 0.06 b

 

High

37.79 ± 0.69 a

6.95 ± 0.12 a

9.16 ± 0.32 a

4.49 ± 0.13 a

8.62 ± 0.37 a

22.27 ± 0.68 a

1.44 ± 0.03 a

 

P S

0.000

0.003

0.057

0.000

0.000

0.000

0.000

 

P D

0.000

0.000

0.000

0.000

0.000

0.000

0.329

 

P S × D

0.396

0.402

0.241

0.956

0.324

0.045

0.000

  1. Each value is the mean ± SE (n = 8). Within a column, values followed by different letters are significantly different at P < 0.05 according to Tukey’s test
  2. P S soil effect, P D density effect, P S × D soil and density interaction effect