| | | | | | | | | | | | 2021 5 27 | | 2021 | | | | | | | | | | | | | 2018 17 | 2018 22 | | | 2018 875 | 2019 648 | | | | 2018 13 | | 2018 37 | | 2020 25 | 2020 | | 2020 13 | 2020 59 | | | | | | | | | | | 1. | | | | | 2. | | | | | 3. | | | | | 4. | | | | 5. | | | | | | | | | | | | | | | | | | | | | | | | | 3 7 | | | | | 2 | 2 | | | Ⅲ | Ⅱ Ⅰ | AQI 24 | AQI>200 | | AQI > 200 2 48 2 | | AQI > 200 3 72 | 3 | AQI > 200 4 96 | 4 AQI > 300 2 48 | 2 AQI 500 | | Ⅲ Ⅱ Ⅰ | | 24 | | 24 | | | | | | | | | | | | | | | | | 36 | | | 36 | | | | | | | | | | | | | | | | | | | Ⅲ | | Ⅱ | | Ⅰ | | | | | | | | 1. | | | Ⅱ | | | Ⅰ | | | Ⅱ | | | Ⅰ | | | 2. | | | | | 1. | 1 | | | | | | | 2 | | | | | | | | 3 | | | | | | | 4 | | Ⅲ Ⅱ Ⅰ | 10％ 20％ 30％ | | | | 2.Ⅲ | | | | | 1 | | | | | | | | | 2 | | | | | | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3. Ⅱ | Ⅲ | | | | | | | | | | | 10 | | | | | | 4. Ⅰ | Ⅱ | | | AQI 500 | | | | | | | | | 5. | 1 Ⅲ | | | | | | | | 2 Ⅱ | Ⅲ | | 3 Ⅰ | Ⅱ | | | | | 6. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 24 | | | | | | | | | | | | | | | | | | | | | | 2016 | | 1. | 2. | 3. | 4. | 1 | | | | | | | | | | | | | | · | | | | | | | | | | | 2021 5 27 |