干旱等级 | 类型 | 1个月尺度 | 3个月尺度 | 6个月尺度 | 12个月尺度 | ||||
PSPI (%) | PSPEI (%) | PSPI (%) | PSPEI (%) | PSPI (%) | PSPEI (%) | PSPI (%) | PSPEI (%) | ||
0 | 无旱 | 71.05 | 67.33 | 69.34 | 67.75 | 68.36 | 67.27 | 67.30 | 66.98 |
1 | 轻旱 | 13.68 | 14.93 | 14.62 | 14.53 | 15.53 | 14.93 | 16.66 | 14.42 |
2 | 中旱 | 8.63 | 10.55 | 9.44 | 10.55 | 9.83 | 10.37 | 9.91 | 11.48 |
3 | 重旱 | 4.30 | 5.67 | 4.47 | 5.33 | 4.52 | 5.79 | 4.83 | 5.48 |
4 | 特旱 | 2.35 | 1.51 | 2.13 | 1.83 | 1.76 | 1.64 | 1.29 | 1.63 |