样地编号

土层/cm

0~20

20~40

40~60

0~60

S1

31.27 ± 18.02^ac

19.38 ± 11.34^a

8.24 ± 1.39^b

21.04 ± 15.22^a

S2

29.81 ± 7.55^a

16.41 ± 7.18^a

6.95 ± 4.45^a

18.83 ± 9.71^a

S3

34.62 ± 19.23^ab

21.53 ± 12.57^bc

9.87 ± 2.24^a

23.56 ± 8.51^ab

S4

21.90 ± 14.81^a

10.76 ± 5.28^ac

3.14 ± 0.81^ac

12.48 ± 10.11^ac

S5

25.46 ± 10.79^a

14.29 ± 10.33^a

5.25 ± 3.92^a

16.04 ± 4.87^a

S6

23.78 ± 15.14^a

12.33 ± 2.91^a

4.98 ± 0.72^a

14.87 ± 7.25^a

S7

17.04 ± 9.80^b

7.18 ± 3.01^ab

2.31 ± 1.50^ab

9.66 ± 3.46^b