Table 4 Soil carbon pool management index (CPMI) of the three soil layers under the different treatments.

0–20

CKT

0.20 b

1.00 bc

1.00 cd

100.00 d

CNd

0.22 a

1.11 a

1.01 ab

112.03 ab

CNd1

0.23 a

1.11 a

1.02 a

113.13 a

CNd2

0.20 c

0.97 cd

0.99 d

96.11 e

CN0

0.18 e

0.88 f

0.98 f

85.79 g

FNd

0.22 a

1.08 a

1.01 abc

109.18 b

FNd1

0.21 b

1.03 b

1.00 bc

103.15 c

FNd2

0.19 cd

0.94 de

0.99 de

93.40 e

FN0

0.19 d

0.91 ef

0.98 ef

89.99 f

20–40

CKT

0.36 bc

1.00 d

1.00 c

100.00 d

CNd

0.41 a

1.12 a

1.01 a

113.52 ab

CNd1

0.42 a

1.15 ab

1.02 a

116.85 a

CNd2

0.35 cd

0.97 e

1.00 c

97.23 de

CN0

0.32 e

0.89 f

0.98 e

86.89 f

FNd

0.40 a

1.10 b

1.01 ab

111.22 b

FNd1

0.39 ab

1.07 c

1.00 bc

106.82 c

FNd2

0.35 cde

0.95 e

0.99 cd

94.61 e

FN0

0.33 de

0.90 f

0.99 de

88.37 f

40–60

CKT

0.66 d

1.00 d

1.00 cd

100.00 d

CNd

0.75 ab

1.14 b

1.01 ab

114.86 b

CNd1

0.78 a

1.18 a

1.02 a

119.67 a

CNd2

0.65 de

0.98 d

1.00 de

97.79 de

CN0

0.59 f

0.89 f

0.98 f

87.40 f

FNd

0.74 bc

1.11 b

1.01 abc

112.42 b

FNd1

0.71 c

1.07 c

1.00 bcd

107.81 c

FNd2

0.63 e

0.96 e

0.99 def

94.97 e

FN0

0.60 f

0.90 f

0.99 ef

89.36 f