Table 1 Areas of different freeze–thaw erosion intensities in the cold mountainous areas of Northwestern Yunnan from 2017 to 2023 (103 km2).
Intensity year | Slight | Light | Moderate | Intense | Extreme | Severe |
|---|---|---|---|---|---|---|
2017 | 7.29 | 9.17 | 11.12 | 7.00 | 6.04 | 2.98 |
2018 | 7.20 | 9.06 | 11.05 | 6.92 | 5.66 | 3.70 |
2019 | 4.68 | 8.84 | 10.24 | 9.37 | 7.43 | 3.03 |
2020 | 4.25 | 10.62 | 10.29 | 8.02 | 6.92 | 3.49 |
2021 | 6.18 | 13.79 | 9.34 | 5.75 | 5.41 | 3.11 |
2022 | 6.71 | 9.34 | 10.85 | 7.48 | 5.65 | 3.57 |
2023 | 5.71 | 10.37 | 11.33 | 7.47 | 5.75 | 2.95 |
