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13个区市县1-7月空气质量“成绩单”出炉
2017-08-10 06:35:53 中国青年网
8月9日,市环保局发布了13个区市县前7个月环境空气质量“成绩单”。无论按综合指数排名,还是按达标天数排名,长海县均拔得头筹。
按环境空气质量综合指数排名,长海县在全市13个区市县中空气质量最好,综合指数3.9;瓦房店市最差,综合指数为4.91,同比改善2.6%;市区综合指数均指为4.58,同比改善3.4%。综合指数同比恶化按照严重程度依次为:长兴岛和金普新区。
按达标天数比例排名,长海县达标天数比例最高为91.3%,同比提高7%;长兴岛达标天数比例最低,仅为67.8%,同比降低17.5%;市区达标天数比例均值为77.4%,同比降低2.4%。达标天数同比恶化按照严重程度依次为:长兴岛、西岗区、沙河口区、瓦房店市、甘井子区、旅顺口区、金普新区。
大连市2017年1-7月环境空气质量排名
排名 综合指数 达标天数比例(%) 区域 指数 同比 区域 比例 同比 1 长海县 3.9 / 长海县 91.3 提高7.0 2 西岗区 4.12 改善8.8% 庄河市 87.7 提高0.4 3 庄河市 4.12 改善2.1% 花园口 82.9 提高10.4 4 花园口 4.22 / 中山区 81 提高0.2 5 旅顺口区 4.28 改善6.3% 市区均值 77.4 降低2.4 6 高新区 4.34 改善12.7% 普兰店区 77.2 提高1.1 7 长兴岛 4.44 恶化7.5% 瓦房店市 76.9 降低4.7 8 金普新区 4.53 恶化0.4% 西岗区 76 降低10.3 市区均值 4.58 改善3.4% 金普新区 75.9 降低3.4 9 中山区 4.64 改善3.1% 高新区 75.1 提高3.5 10 普兰店区 4.81 改善10.3% 旅顺口区 72.5 降低3.6 11 沙河口区 4.83 改善3.0% 沙河口区 72.5 降低6.1 12 甘井子区 4.9 改善8.1% 甘井子区 72.4 降低4.1 13 瓦房店市 4.91 改善2.6% 长兴岛 67.8 降低17.5 注:1.环境空气质量综合指数是通过对SO2、NO2、PM10、PM2.5、CO、O3等六项污染物的 阶段性综合评价,反映区域的空气质量水平,数值越大表明综合污染程度越重。 2.达标天数比例是按日计算的环境空气质量评价结果。
3.长海县PM10和花园口PM2.5仪器故障,2016年1-7月有效数据不足,无法计算同 比。
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