?
?PM2.5??????????????2????????
????????????????????????????????????????????
ۧ??????????????????˥?????

17?? ""16

    ?????????????????????????1000?????200?????????????16?????

PM2.5????

PM2.5???2.5???????PM2.5ا????????

?????????????6????2000???2000???
??? 
???????90%??,??80%?80%90%?,?,???
??????? 
??????????????
? ?? 
??????????[?]

???

PM2.5?????PM2.5???????????????????10????????PM2.5?????????

????????????????????110?134???????? ?


?I ??2?? ??

?????????


??
??

???

CBD????
CBD????

?????????????????????????????????????

????????????????????????????? ?

?????PM2.5??????????pPM2.5????????

1952?? ???

1952125-8??????????????????4???4000?o8000???????y??350???????52?14????????

???????,?????1968?,????????1995??????ǧ?????????????2012?35??4.5?????


??????
??????

2012117????
2012117????

??????y?
??Z ???????Z??????????ئ????
?? 80????????????????????????7?19???210????
?? ???PM2.5??????63319962006???????8???

? ??

?? ??????????????????????

?????? ????????????????????????

???? ????? ???????????B??

??????? ????????????????????


???
???