Soil layer (cm)

Vegetation age

SOC (g・kg−1)

Total N (g・kg−1)

Total P (g・kg−1)

Bulk density (g・cm−3)

Total porosity (%)

pH

0 - 20

20a

2.09

0.26

0.49

1.23

53.58

8.49

25a

3.14

0.37

0.51

1.20

54.72

8.73

40a

3.57

0.41

0.52

1.12

57.74

8.50

50a

4.66

0.44

0.52

1.09

58.87

8.41

Cropland

1.60

0.19

0.49

1.27

49.68

8.36

20 - 40

20a

1.30

0.18

0.49

1.31

50.57

8.51

25a

1.93

0.23

0.50

1.35

49.06

8.77

40a

2.02

0.24

0.50

1.30

50.94

8.53

50a

3.25

0.31

0.52

1.24

53.21

8.47

Cropland

1.18

0.12

0.45

1.39

47.57

8.41