Assessment of Disaster Loss Index and Characteristics of Gale Disaster in Typical Arid and Semiarid Lands

Table 3

Classification standard of gale disaster events.

Percentile r (%)	Loss index ()	Level of
r ≤ 50.0	≤ 0.21552	Mild (level I)
50.1 ≤ r ≤ 75.0	0.21553 ≤  ≤ 0.69402	Moderate (level II)
75.1 ≤ r ≤ 90.0	0.69403 ≤ ≤ 2.05797	Severe (level III)
r ≥ 90.1	≥ 2.05798	Very severe (level IV)