种植作物类型 | 土层 (cm) | SOC (g∙kg−1) | HC (g∙kg−1) |
牛蒡(Z1) | 0~20 | 14.06 ± 2.67a | 9.84 ± 4.15a |
20~50 | 6.83 ± 3.71b | 4.77 ± 1.89b | |
50~100 | 2.54 ± 0.82b | 1.62 ± 0.05ac | |
山药(Z2) | 0~20 | 13.88 ± 8.41a | 8.36 ± 3.59a |
20~50 | 6.14 ± 1.92b | 3.85 ± 2.23ab | |
50~100 | 2.17 ± 0.86b | 1.01 ± 0.74b | |
棉花(Z3) | 0~20 | 9.91 ± 4.07a | 6.36 ± 1.24ab |
20~50 | 4.33 ± 1.72b | 2.80 ± 0.49b | |
50~100 | 1.18 ± 2.16b | 0.57 ± 0.32b | |
大豆(Z4) | 0~20 | 15.75 ± 6.42ac | 11.54 ± 7.27c |
20~50 | 9.11 ± 5.24b | 5.03 ± 1.94b | |
50~100 | 1.93 ± 0.08b | 0.81 ± 0.56b | |
玉米(Z5) | 0~20 | 8.82 ± 6.43a | 5.79 ± 3.28a |
20~50 | 3.14 ± 1.48b | 1.97 ± 0.53b | |
50~100 | 0.61 ± 0.20ab | 0.31 ± 0.04b |