環境保護部(bu)有關(guan)負責(ze)人近日(ri)向媒體發布(bu)了2014年2月份(fen)京津冀、長(chang)三角(jiao)、珠三角(jiao)區(qu)域及直轄(xia)市(shi)、省會城市(shi)和計劃單列市(shi)等74個城市(shi)空(kong)氣(qi)質量狀況。

結(jie)果顯示，2月份(fen)，74個(ge)城(cheng)(cheng)(cheng)市(shi)平(ping)均(jun)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例為(wei)60.3%，平(ping)均(jun)超(chao)標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例為(wei)39.7%，輕度(du)污(wu)(wu)染(ran)(ran)占(zhan)20.3%，中(zhong)度(du)污(wu)(wu)染(ran)(ran)占(zhan)7.2%，重度(du)污(wu)(wu)染(ran)(ran)占(zhan)8.3%，嚴重污(wu)(wu)染(ran)(ran)占(zhan)3.9%。昆明、海(hai)口、深(shen)圳等7個(ge)城(cheng)(cheng)(cheng)市(shi)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例為(wei)100%，舟山(shan)、南昌、廈門(men)等14個(ge)城(cheng)(cheng)(cheng)市(shi)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例在(zai)80%以上(shang)，嘉興、上(shang)海(hai)、南通等30個(ge)城(cheng)(cheng)(cheng)市(shi)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例范圍在(zai)50%～80%之(zhi)間，西安、邢臺、石(shi)(shi)家莊(zhuang)(zhuang)等23個(ge)城(cheng)(cheng)(cheng)市(shi)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例不足50%。超(chao)標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)中(zhong)以PM2.5為(wei)首要污(wu)(wu)染(ran)(ran)物(wu)的(de)天(tian)(tian)(tian)(tian)數(shu)(shu)最多，占(zhan)超(chao)標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)的(de)91.8%；其次是PM10，占(zhan)5.8%。與(yu)上(shang)年同(tong)期相(xiang)比(bi)，74個(ge)城(cheng)(cheng)(cheng)市(shi)平(ping)均(jun)達標(biao)(biao)(biao)(biao)天(tian)(tian)(tian)(tian)數(shu)(shu)比(bi)例提高2.7個(ge)百分(fen)點，主(zhu)要污(wu)(wu)染(ran)(ran)物(wu)中(zhong)除NO2外均(jun)有所(suo)下降(jiang)，其中(zhong)，PM2.5、PM10、SO2月均(jun)濃度(du)分(fen)別下降(jiang)5.9%、5.9%、8.2%，CO日(ri)均(jun)值超(chao)標(biao)(biao)(biao)(biao)率和(he)(he)O3日(ri)最大8小時值超(chao)標(biao)(biao)(biao)(biao)率分(fen)別下降(jiang)1.2%、0.1%，NO2月均(jun)濃度(du)上(shang)升7.7%。與(yu)上(shang)月相(xiang)比(bi)，各主(zhu)要污(wu)(wu)染(ran)(ran)物(wu)均(jun)有所(suo)下降(jiang)。按照城(cheng)(cheng)(cheng)市(shi)環境空氣(qi)質量(liang)綜合(he)指數(shu)(shu)評價，2月份(fen)空氣(qi)質量(liang)相(xiang)對較差的(de)前10位(wei)城(cheng)(cheng)(cheng)市(shi)分(fen)別是邢臺、石(shi)(shi)家莊(zhuang)(zhuang)、保定(ding)、唐山(shan)、邯(han)鄲、西安、廊坊(fang)、衡水、濟南和(he)(he)北京；空氣(qi)質量(liang)相(xiang)對較好(hao)的(de)前10位(wei)城(cheng)(cheng)(cheng)市(shi)是海(hai)口、舟山(shan)、福(fu)州、拉薩(sa)、深(shen)圳、南昌、珠海(hai)、麗水、廈門(men)和(he)(he)惠州。

京(jing)津(jin)(jin)冀(ji)地區13個(ge)城市空氣質量平均(jun)達(da)標(biao)(biao)天(tian)數(shu)(shu)比(bi)例為(wei)(wei)31.5%，平均(jun)超標(biao)(biao)天(tian)數(shu)(shu)比(bi)例為(wei)(wei)68.5%，重度(du)污(wu)染占(zhan)22.6%，嚴重污(wu)染占(zhan)19.3%。13個(ge)城市中(zhong)天(tian)津(jin)(jin)、承德達(da)標(biao)(biao)天(tian)數(shu)(shu)比(bi)例分別為(wei)(wei)57.1%、50.0%，其余11個(ge)城市達(da)標(biao)(biao)天(tian)數(shu)(shu)比(bi)例不足(zu)50%。京(jing)津(jin)(jin)冀(ji)地區超標(biao)(biao)天(tian)數(shu)(shu)中(zhong)以PM2.5為(wei)(wei)首要污(wu)染物的(de)(de)天(tian)數(shu)(shu)最多(duo)，占(zhan)超標(biao)(biao)天(tian)數(shu)(shu)的(de)(de)88.7%；其次是(shi)PM10，占(zhan)10.9%。與(yu)上年同期相(xiang)比(bi)，京(jing)津(jin)(jin)冀(ji)地區13個(ge)城市平均(jun)達(da)標(biao)(biao)天(tian)數(shu)(shu)比(bi)例降(jiang)低(di)0.6個(ge)百分點，與(yu)1月份相(xiang)比(bi)提高6.1個(ge)百分點。

長三(san)角(jiao)地區(qu)25個城市(shi)空氣質(zhi)量(liang)平均(jun)(jun)達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)為(wei)68.6%，平均(jun)(jun)超(chao)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)為(wei)31.4%，重度污(wu)染占2.3%，嚴重污(wu)染占0.6%。25個城市(shi)中僅麗水達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)為(wei)100%，舟山、臺(tai)州(zhou)、溫州(zhou)等4個城市(shi)達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)在(zai)80%～100%之間，嘉興、上(shang)海、南通(tong)等19個城市(shi)達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)在(zai)50%～80%之間，徐州(zhou)的(de)(de)達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)不足50%。長三(san)角(jiao)地區(qu)超(chao)標天(tian)(tian)(tian)數(shu)(shu)中以PM2.5為(wei)首要污(wu)染物的(de)(de)天(tian)(tian)(tian)數(shu)(shu)最多，占超(chao)標天(tian)(tian)(tian)數(shu)(shu)的(de)(de)98.6%；其(qi)次(ci)是NO2，占0.9%。與(yu)上(shang)年同期相比，長三(san)角(jiao)地區(qu)25個城市(shi)平均(jun)(jun)達(da)(da)(da)標天(tian)(tian)(tian)數(shu)(shu)比例(li)(li)(li)(li)提(ti)高4.8個百分點(dian)，與(yu)1月份相比提(ti)高27.2個百分點(dian)。

珠(zhu)三(san)角地區9個城市空氣(qi)質(zhi)量平均達(da)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)為91.6%，平均超(chao)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)為8.4%，無重度及以上污(wu)染。9個城市中深圳、珠(zhu)海(hai)、惠州3個城市達(da)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)為100%，中山、東莞、廣州等5個城市達(da)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)在80%～100%之間，肇(zhao)慶達(da)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)在50%～80%之間。珠(zhu)三(san)角地區超(chao)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)以PM 2.5為首要污(wu)染物的天(tian)(tian)(tian)數(shu)(shu)最多，占(zhan)超(chao)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)的71.4%；其次是NO2，占(zhan)28.6%。與上年同期相比，珠(zhu)三(san)角地區9個城市平均達(da)標(biao)(biao)天(tian)(tian)(tian)數(shu)(shu)比例(li)降低0.4個百分(fen)點，與1月份相比提高39.2個百分(fen)點。