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

2???????vx

3?????

4???????

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???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???????????????????????????????????????????????????????????????????????????????????(????) ???:?????