環(huan)境保護部有關負(fu)責人近日向媒(mei)體發布(bu)了2014年(nian)2月份京津冀、長三(san)角、珠三(san)角區(qu)域及直(zhi)轄市(shi)、省會城市(shi)和計劃單列市(shi)等74個城市(shi)空氣質量狀況。

結果(guo)顯示，2月(yue)份(fen)，74個(ge)(ge)城(cheng)(cheng)市(shi)平(ping)均(jun)(jun)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例為60.3%，平(ping)均(jun)(jun)超(chao)(chao)(chao)標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例為39.7%，輕(qing)度污(wu)(wu)染占(zhan)20.3%，中(zhong)度污(wu)(wu)染占(zhan)7.2%，重度污(wu)(wu)染占(zhan)8.3%，嚴(yan)重污(wu)(wu)染占(zhan)3.9%。昆明、海口(kou)(kou)、深圳(zhen)等(deng)(deng)7個(ge)(ge)城(cheng)(cheng)市(shi)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例為100%，舟(zhou)山(shan)、南昌(chang)、廈門等(deng)(deng)14個(ge)(ge)城(cheng)(cheng)市(shi)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例在(zai)80%以上(shang)(shang)，嘉興、上(shang)(shang)海、南通等(deng)(deng)30個(ge)(ge)城(cheng)(cheng)市(shi)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例范(fan)圍在(zai)50%～80%之(zhi)間，西安(an)、邢臺(tai)、石家莊等(deng)(deng)23個(ge)(ge)城(cheng)(cheng)市(shi)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例不足50%。超(chao)(chao)(chao)標天(tian)(tian)(tian)數(shu)(shu)(shu)中(zhong)以PM2.5為首要污(wu)(wu)染物(wu)(wu)的(de)天(tian)(tian)(tian)數(shu)(shu)(shu)最多，占(zhan)超(chao)(chao)(chao)標天(tian)(tian)(tian)數(shu)(shu)(shu)的(de)91.8%；其次是PM10，占(zhan)5.8%。與上(shang)(shang)年同期相(xiang)比(bi)(bi)(bi)，74個(ge)(ge)城(cheng)(cheng)市(shi)平(ping)均(jun)(jun)達標天(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)例提高(gao)2.7個(ge)(ge)百分(fen)點，主要污(wu)(wu)染物(wu)(wu)中(zhong)除(chu)NO2外均(jun)(jun)有所(suo)下降(jiang)，其中(zhong)，PM2.5、PM10、SO2月(yue)均(jun)(jun)濃度分(fen)別下降(jiang)5.9%、5.9%、8.2%，CO日均(jun)(jun)值(zhi)超(chao)(chao)(chao)標率和O3日最大(da)8小時值(zhi)超(chao)(chao)(chao)標率分(fen)別下降(jiang)1.2%、0.1%，NO2月(yue)均(jun)(jun)濃度上(shang)(shang)升(sheng)7.7%。與上(shang)(shang)月(yue)相(xiang)比(bi)(bi)(bi)，各主要污(wu)(wu)染物(wu)(wu)均(jun)(jun)有所(suo)下降(jiang)。按照城(cheng)(cheng)市(shi)環境空(kong)氣(qi)質量綜合指數(shu)(shu)(shu)評價，2月(yue)份(fen)空(kong)氣(qi)質量相(xiang)對(dui)較差的(de)前10位城(cheng)(cheng)市(shi)分(fen)別是邢臺(tai)、石家莊、保定、唐(tang)山(shan)、邯鄲、西安(an)、廊坊、衡水(shui)、濟(ji)南和北京；空(kong)氣(qi)質量相(xiang)對(dui)較好的(de)前10位城(cheng)(cheng)市(shi)是海口(kou)(kou)、舟(zhou)山(shan)、福州、拉薩、深圳(zhen)、南昌(chang)、珠海、麗水(shui)、廈門和惠州。

京(jing)津(jin)(jin)冀(ji)地區13個(ge)(ge)(ge)城(cheng)市空氣質量平均(jun)達(da)(da)標(biao)天(tian)數(shu)比(bi)(bi)例為(wei)31.5%，平均(jun)超標(biao)天(tian)數(shu)比(bi)(bi)例為(wei)68.5%，重度污染(ran)占(zhan)22.6%，嚴重污染(ran)占(zhan)19.3%。13個(ge)(ge)(ge)城(cheng)市中天(tian)津(jin)(jin)、承德達(da)(da)標(biao)天(tian)數(shu)比(bi)(bi)例分別為(wei)57.1%、50.0%，其余11個(ge)(ge)(ge)城(cheng)市達(da)(da)標(biao)天(tian)數(shu)比(bi)(bi)例不足(zu)50%。京(jing)津(jin)(jin)冀(ji)地區超標(biao)天(tian)數(shu)中以PM2.5為(wei)首要(yao)污染(ran)物的天(tian)數(shu)最(zui)多，占(zhan)超標(biao)天(tian)數(shu)的88.7%；其次是PM10，占(zhan)10.9%。與上(shang)年(nian)同期相比(bi)(bi)，京(jing)津(jin)(jin)冀(ji)地區13個(ge)(ge)(ge)城(cheng)市平均(jun)達(da)(da)標(biao)天(tian)數(shu)比(bi)(bi)例降低(di)0.6個(ge)(ge)(ge)百(bai)分點，與1月份相比(bi)(bi)提高6.1個(ge)(ge)(ge)百(bai)分點。

長(chang)三(san)(san)(san)角地(di)區25個(ge)城(cheng)市(shi)空氣(qi)質量平(ping)均(jun)達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)為68.6%，平(ping)均(jun)超標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)為31.4%，重度污染(ran)(ran)占2.3%，嚴重污染(ran)(ran)占0.6%。25個(ge)城(cheng)市(shi)中僅麗水達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)為100%，舟(zhou)山、臺州、溫(wen)州等4個(ge)城(cheng)市(shi)達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)在80%～100%之間，嘉興、上海、南通(tong)等19個(ge)城(cheng)市(shi)達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)在50%～80%之間，徐州的(de)達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)不足50%。長(chang)三(san)(san)(san)角地(di)區超標(biao)天(tian)(tian)數(shu)(shu)中以PM2.5為首要污染(ran)(ran)物的(de)天(tian)(tian)數(shu)(shu)最多，占超標(biao)天(tian)(tian)數(shu)(shu)的(de)98.6%；其次是NO2，占0.9%。與上年同期相(xiang)比(bi)(bi)，長(chang)三(san)(san)(san)角地(di)區25個(ge)城(cheng)市(shi)平(ping)均(jun)達(da)標(biao)天(tian)(tian)數(shu)(shu)比(bi)(bi)例(li)(li)提高4.8個(ge)百分點(dian)，與1月份相(xiang)比(bi)(bi)提高27.2個(ge)百分點(dian)。

珠(zhu)三(san)(san)角地(di)區(qu)(qu)9個(ge)城(cheng)市空氣質量平均達(da)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)為91.6%，平均超(chao)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)為8.4%，無重度及(ji)以(yi)上(shang)污染。9個(ge)城(cheng)市中深圳、珠(zhu)海、惠州(zhou)3個(ge)城(cheng)市達(da)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)為100%，中山(shan)、東莞、廣州(zhou)等5個(ge)城(cheng)市達(da)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)在80%～100%之間(jian)，肇(zhao)慶達(da)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)在50%～80%之間(jian)。珠(zhu)三(san)(san)角地(di)區(qu)(qu)超(chao)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)以(yi)PM 2.5為首(shou)要污染物的天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)最多，占超(chao)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)的71.4%；其次是NO2，占28.6%。與(yu)上(shang)年同期相比(bi)，珠(zhu)三(san)(san)角地(di)區(qu)(qu)9個(ge)城(cheng)市平均達(da)標天(tian)(tian)(tian)(tian)數(shu)(shu)(shu)比(bi)例(li)降低0.4個(ge)百分點(dian)，與(yu)1月(yue)份相比(bi)提(ti)高39.2個(ge)百分點(dian)。