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今年8月份城市平均优良天数比例达89.3%

2017-09-20 07:52:14   中国经济网

经济日报北京9月19日讯 (记者 曹红艳) 环保部19日通报的重点区域和74个城市空气质量状况显示,8月,全国338个地级及以上城市平均优良天数比例为89.3%,同比下降0.9个百分点。1月至8月,平均优良天数比例为78.3%,同比下降2.8个百分点;PM2.5浓度为42微克/立方米,同比下降2.3%;PM10浓度为74微克/立方米,同比下降1.3%。

环保部环境监测司司长刘志全介绍,1月至8月,74个城市空气质量相对较差的后10位城市(从第74名到第65名)依次是:邯郸、石家庄、邢台、保定、唐山、太原、郑州、衡水、西安和济南市。前10位(从第1名到第10名)城市依次是:海口、拉萨、珠海、舟山、丽水、深圳、惠州、厦门、贵阳和福州市。

其中,京津冀区域13个城市8月平均优良天数比例为67.5%,同比下降16.1个百分点;PM2.5浓度为39微克/立方米,同比上升5.4%;PM10浓度为69微克/立方米,同比上升9.5%。1月至8月,平均优良天数比例为52.8%,同比下降8.0个百分点;PM2.5浓度为65微克/立方米,同比上升10.2%;PM10浓度为115微克/立方米,同比上升10.6%。

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