????:1??????????:??????????

2????????

3????????????

4?2019??????

5???????

???????2??21? (?? ??)???????1??,??168????,???????????????????????????????????;??????????????????????????????????????????????????????????

??21???1????????,??????339?????????(PM2.5)??53.1??/??,???4.7%;??(PM10)????80??/???,????8.1%?????????????339??????78.0%,???0.5???

1??,??“2+36”???PM2.5??61.0??/???,???18.3%;??68.5%,??7.4??;???2.9%,??????????????6.8???1???,??PM2.5??28.3??/?,????23.5%?

1??,168???:PM2.5??20??????????????????????????????????????????????????????????????????????????????????????????;PM2.5??20?????????????????????????????????????????????????????????????????????????????????????????????????(?????) ???????:???