Table 1 The soil physical and chemical properties of farmland, LT grassland and AS land at different depths in study area.
Landscapes | Soil depth (cm) | pH | EC (mS/cm) | Salt content (mg/kg) | Organic matter (%) | Clay (%) | Silt (%) | Sand (%) | Bulk density (g/cm3) |
|---|---|---|---|---|---|---|---|---|---|
Farmland | 0–30 | 8.16 | 0.06 | 84.82 | 0.25 | 2.23 | 5.75 | 92.02 | 1.57 |
30–100 | 8.02 | 0.08 | 99.09 | 0.42 | 1.58 | 3.61 | 94.81 | 1.63 | |
100–135 | 7.87 | 0.12 | 128.70 | 0.28 | 2.34 | 5.13 | 92.53 | 1.56 | |
135–150 | 8.00 | 0.13 | 143.18 | 0.30 | 5.12 | 10.41 | 84.47 | 1.44 | |
LT grassland | 0–25 | 8.45 | 0.26 | 278.50 | 2.50 | 3.39 | 7.69 | 88.91 | 1.43 |
25–60 | 8.38 | 0.66 | 495.00 | 0.52 | 6.53 | 14.88 | 78.59 | 1.53 | |
60–90 | 8.01 | 0.68 | 632.65 | 0.34 | 7.25 | 20.29 | 72.46 | 1.54 | |
90–150 | 7.98 | 0.49 | 585.88 | 0.28 | 5.92 | 10.28 | 83.8 | 1.59 | |
AS land | 0–20 | 11.25 | 1.68 | 2218.50 | 0.16 | 4.90 | 8.47 | 86.62 | 1.73 |
20–55 | 10.62 | 0.91 | 972.33 | 0.26 | 4.44 | 7.96 | 87.59 | 1.55 | |
55–90 | 9.52 | 0.82 | 770.00 | 0.24 | 6.79 | 9.86 | 83.35 | 1.57 | |
90–150 | 9.61 | 0.69 | 627.19 | 0.19 | 7.30 | 14.95 | 77.74 | 1.61 |
