样地编号

土层/cm

0~20

20~40

40~60

0~60

S1

2.04 ± 0.61^a

1.68 ± 0.45^ac

1.18 ± 0.07^ac

1.54 ± 0.16^a

S2

2.12 ± 1.03^ab

1.73 ± 0.79^a

1.09 ± 0.04^a

1.61 ± 0.83^a

S3

2.39 ± 0.85^bc

1.94 ± 0.08^b

1.35 ± 0.03^c

1.88 ± 0.06^ab

S4

1.42 ± 0.34^ac

1.01 ± 0.53^a

0.62 ± 0.14^a

1.15 ± 0.34^a

S5

1.80 ± 0.27^a

1.24 ± 0.14^a

0.71 ± 0.01^a

1.32 ± 0.29^bc

S6

1.63 ± 0.92^a

1.19 ± 0.68^a

0.87 ± 0.19^bc

1.46 ± 0.13^a

S7

1.21 ± 0.86^b

0.94 ± 0.22^ac

0.66 ± 0.12^a

1.07 ± 0.01^ab