Table 3 Soil salinized ratio of farmland, LT grassland and AS land in freezing period and thawing period.
Landscapes | Soil depth (cm) | Salt at the beginning of freezing (mg/kg) | Salt at the end of freezing (mg/kg) | Salt at the end of thawing (mg/kg) | Salinized ratio in freezing (%) | Salinized ratio in thawing (%) |
|---|---|---|---|---|---|---|
Farmland | 0–10 | 74.10 | 87.80 | 102.49 | 18.49 a | 16.73 a |
10–100 | 74.89 | 99.34 | 111.46 | 33.80 a | 14.81 a | |
100–150 | 126.29 | 109.82 | 110.27 | − 12.27 b | 0.68 b | |
LT grassland | 0–10 | 114.63 | 273.56 | 412.53 | 138.65 a | 50.80 a |
10–30 | 315.44 | 377.09 | 255.73 | 22.01 b | − 32.60 b | |
30–130 | 555.65 | 908.80 | 1009.07 | 63.28 b | 10.88 ab | |
130–170 | 635.52 | 824.05 | 740.81 | 29.46 b | − 10.21 b | |
AS land | 0–10 | 2322.67 | 2765.84 | 4209.50 | 19.08 b | 52.20 a |
10–40 | 965.78 | 2990.47 | 2894.90 | 213.71 a | − 2.84 ab | |
40–110 | 780.33 | 1862.35 | 1456.57 | 136.37 ab | − 20.13 b | |
110–180 | 557.74 | 910.51 | 955.95 | 62.71 b | 5.47 ab |
