土层深度/cm Soil depth | 5a生 Five years | 9a生 Nine years | 18a生 Eighteen years | 33a生 Thirty-three years | 43a生 Forty-three years |
0~10 | 48.25 ± 13.78 | 79.16 ± 14.90 | 86.25 ± 17.64 | 68.33 ± 16.59 | 63.46 ± 5.29 |
10~20 | 36.76 ± 6.63 | 45.37 ± 3.93 | 42.81 ± 15.91 | 46.55 ± 4.21 | 52.64 ± 0.58 |
20~30 | 30.61 ± 3.71 | 31.53 ± 6.21 | 22.71 ± 12.31 | 30.20 ± 8.41 | 45.41 ± 2.51 |
30~40 | 21.91 ± 3.70 | 18.98 ± 9.06 | 14.67 ± 9.16 | 16.94 ± 2.61 | 39.75 ± 12.54 |
40~50 | 12.04 ± 3.02 | 13.27 ± 7.22 | 8.45 ± 2.22 | 11.02 ± 0.70 | 34.18 ± 17.42 |
50~60 | 6.95 ± 2.13 | 6.54 ± 1.77 | 5.07 ± 0.18 | 8.96 ± 2.98 | 30.85 ± 16.10 |
60~70 | 4.60 ± 1.75 | 2.20 ± 0.27 | 4.19 ± 2.11 | 3.72 ± 3.24 | 24.41 ± 13.42 |
70~80 | 3.49 ± 2.98 | 0.46 ± 0.80 | 0.33 ± 0.57 | - | 22.26 ± 15.54 |
80~90 | 0.97 ± 1.16 | - | - | - | 22.55 ± 14.43 |
90~100 | - | - | - | - | 19.81 ± 15.17 |
100~110 | - | - | - | - | 14.15 ± 13.53 |
110~120 | - | - | - | - | 12.08 ± 16.33 |
120~130 | - | - | - | - | 8.01 ± 13.87 |