成灾率 | 高风险 | 中高风险 | 中风险 | 中低风险 | 低风险 |
5% | 1 ≤ R < 2 | 2 ≤ R < 3 | 3 ≤ R < 4 | 4 ≤ R < 5 | R ≥ 5 |
10% | 1 ≤ R < 2 | 2 ≤ R < 3 | 3 ≤ R < 5 | 5 ≤ R < 7 | R ≥ 7 |