環(huan)境(jing)保護部有關負責(ze)人(ren)近日向媒體(ti)發(fa)布了2014年6月份京津冀、長三角(jiao)、珠三角(jiao)區域及直轄市(shi)(shi)、省會(hui)城市(shi)(shi)和計(ji)劃單列市(shi)(shi)等74個城市(shi)(shi)空氣質量(liang)狀況。
這位負責(ze)人介紹說,6月(yue)份,74個(ge)城(cheng)(cheng)市(shi)達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)在(zai)(zai)6.7%~100.0%之(zhi)間(jian)(jian),平均達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)為(wei)69.9%,輕度污染天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)為(wei)21.5%,中(zhong)度污染為(wei)6.3%,重度及(ji)以上污染為(wei)2.3%。主要污染物(wu)為(wei)O3,其(qi)次為(wei)PM2.5。海口、昆明、廈(sha)門(men)、貴陽、烏魯木齊(qi)等(deng)5個(ge)城(cheng)(cheng)市(shi)的達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)為(wei)100%,深(shen)圳、惠州(zhou)(zhou)、拉(la)薩等(deng)28個(ge)城(cheng)(cheng)市(shi)的達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)在(zai)(zai)80%以上,鹽城(cheng)(cheng)、廣州(zhou)(zhou)、麗水(shui)等(deng)24個(ge)城(cheng)(cheng)市(shi)達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)在(zai)(zai)50%~80%之(zhi)間(jian)(jian),衡水(shui)、合肥、滄州(zhou)(zhou)等(deng)17個(ge)城(cheng)(cheng)市(shi)達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)不足50%。與(yu)去年同期相比(bi)(bi)(bi)(bi),74個(ge)城(cheng)(cheng)市(shi)平均達(da)(da)標(biao)天(tian)數(shu)(shu)(shu)比(bi)(bi)(bi)(bi)例(li)由71.7%下降到69.9%,降低1.8個(ge)百分點。京津冀區(qu)域空氣(qi)質量有所改(gai)善,長(chang)三(san)角區(qu)域、珠三(san)角區(qu)域空氣(qi)質量有所下降。按照城(cheng)(cheng)市(shi)環境空氣(qi)質量綜合指數(shu)(shu)(shu)評價,6月(yue)份空氣(qi)質量相對(dui)(dui)較(jiao)差(cha)的前10位城(cheng)(cheng)市(shi)是邢臺、唐山、南京、石家莊(zhuang)、濟南、邯鄲(dan)、武漢、徐州(zhou)(zhou)、保定和(he)宿遷;空氣(qi)質量相對(dui)(dui)較(jiao)好(hao)的前10位城(cheng)(cheng)市(shi)是海口、珠海、舟山、惠州(zhou)(zhou)、深(shen)圳、拉(la)薩、中(zhong)山、張家口、昆明和(he)廈(sha)門(men)。
京(jing)津冀(ji)區(qu)域13個(ge)(ge)(ge)(ge)(ge)城市(shi)(shi)空(kong)氣質量達標天(tian)(tian)數(shu)比例在6.7%~92.9%之間,平(ping)均為48.5%,低于(yu)(yu)74個(ge)(ge)(ge)(ge)(ge)城市(shi)(shi)平(ping)均達標天(tian)(tian)數(shu)比例21.4個(ge)(ge)(ge)(ge)(ge)百(bai)(bai)分(fen)(fen)點(dian)(dian);平(ping)均超標天(tian)(tian)數(shu)比例為51.5%,未(wei)出現嚴(yan)重污(wu)染,重度及以上(shang)(shang)(shang)污(wu)染天(tian)(tian)數(shu)高于(yu)(yu)74個(ge)(ge)(ge)(ge)(ge)城市(shi)(shi)0.9個(ge)(ge)(ge)(ge)(ge)百(bai)(bai)分(fen)(fen)點(dian)(dian)。主要污(wu)染物為O3,其次為PM2.5。與(yu)上(shang)(shang)(shang)月(yue)相比,京(jing)津冀(ji)區(qu)域13個(ge)(ge)(ge)(ge)(ge)城市(shi)(shi)平(ping)均達標天(tian)(tian)數(shu)比例由43.5%上(shang)(shang)(shang)升(sheng)到48.5%,提(ti)高5.0個(ge)(ge)(ge)(ge)(ge)百(bai)(bai)分(fen)(fen)點(dian)(dian),空(kong)氣質量有所改善(shan)。6項監測(ce)指(zhi)標中,PM2.5濃度與(yu)上(shang)(shang)(shang)月(yue)持平(ping),PM10、SO2和NO2濃度分(fen)(fen)別下(xia)降28.8%、25.0%和15.0%;CO日均值平(ping)均超標率(lv)下(xia)降0.5個(ge)(ge)(ge)(ge)(ge)百(bai)(bai)分(fen)(fen)點(dian)(dian);O3日最大8小時值平(ping)均超標率(lv)上(shang)(shang)(shang)升(sheng)8.4個(ge)(ge)(ge)(ge)(ge)百(bai)(bai)分(fen)(fen)點(dian)(dian)。
長三角區域25個(ge)城(cheng)市空(kong)氣質(zhi)量達標天數比(bi)(bi)例在28.0%~96.7%之間,平(ping)(ping)均(jun)為(wei)63.4%,低(di)于(yu)74個(ge)城(cheng)市平(ping)(ping)均(jun)達標天數比(bi)(bi)例6.5個(ge)百分點(dian)(dian);平(ping)(ping)均(jun)超標天數比(bi)(bi)例為(wei)36.6%,未出現嚴重污(wu)染(ran),重度(du)及以上污(wu)染(ran)比(bi)(bi)例高于(yu)74個(ge)城(cheng)市1.8個(ge)百分點(dian)(dian)。主要污(wu)染(ran)物(wu)為(wei)O3,其次為(wei)PM2.5。與(yu)上月(yue)相比(bi)(bi),長三角區域25個(ge)城(cheng)市平(ping)(ping)均(jun)達標天數比(bi)(bi)例由58.0%上升為(wei)63.4%,提高5.4個(ge)百分點(dian)(dian),空(kong)氣質(zhi)量有所(suo)改善(shan);6項(xiang)監測指(zhi)標中(zhong),除CO日(ri)均(jun)值(zhi)平(ping)(ping)均(jun)超標率持(chi)平(ping)(ping)外(wai),其他(ta)5項(xiang)污(wu)染(ran)物(wu)濃度(du)均(jun)不同程度(du)下(xia)降,其中(zhong)PM2.5下(xia)降9.4%、PM10下(xia)降27.0%、SO2下(xia)降24.0%、NO2下(xia)降17.9%;O3日(ri)最大8小時值(zhi)平(ping)(ping)均(jun)超標率下(xia)降1.1個(ge)百分點(dian)(dian)。
珠三(san)(san)角(jiao)區域9個城(cheng)(cheng)市(shi)空(kong)(kong)氣(qi)質量達(da)標天(tian)(tian)數(shu)比例在73.3%~96.7%之(zhi)間,平(ping)均(jun)(jun)為(wei)(wei)84.3%,高于74個城(cheng)(cheng)市(shi)平(ping)均(jun)(jun)達(da)標天(tian)(tian)數(shu)比例14.4個百分(fen)點;平(ping)均(jun)(jun)超(chao)(chao)標天(tian)(tian)數(shu)比例為(wei)(wei)15.7%,未出現(xian)重(zhong)度及以上污染。主要污染物為(wei)(wei)O3,其(qi)次為(wei)(wei)PM2.5。與上月相比,珠三(san)(san)角(jiao)區域9個城(cheng)(cheng)市(shi)平(ping)均(jun)(jun)達(da)標天(tian)(tian)數(shu)比例由96.2%下(xia)降到84.3%,降低11.9個百分(fen)點,空(kong)(kong)氣(qi)質量有(you)所下(xia)降。6項監測指標中,PM2.5和PM10濃(nong)度分(fen)別(bie)上升8.0%、12.8%, SO2和NO2濃(nong)度分(fen)別(bie)下(xia)降7.1%和15.2%;CO日均(jun)(jun)值超(chao)(chao)標率持平(ping);O3日最大(da)8小(xiao)時值平(ping)均(jun)(jun)超(chao)(chao)標率上升13.1個百分(fen)點。