Table 2 The interannual and seasonal degrees of drought in different drought grades.
Drought levels | Wet (km2) | Suitable (km2) | Mild drought (km2) | Moderate drought (km2) | Severe drought (km2) |
|---|---|---|---|---|---|
Year | 1.01 | 49,568.55 | 202,292.58 | 94,591.05 | 6072.81 |
Spring | 297.44 | 91,097.25 | 100,240.46 | 85,462.54 | 75,428.31 |
Summer | 290.12 | 47,240.21 | 237,692.43 | 66,842.92 | 460.32 |
Autumn | 29.84 | 41,672.54 | 211,917.62 | 94,950.32 | 3955.67 |
Winter | 21,151.56 | 133,959.88 | 105,757.80 | 56,404.16 | 35,252.60 |
