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Topic: 11月京津冀空气质量大幅提升 PM2.5浓度同比下降41.2% (Read 104 times)

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Activity: 106
Merit: 10
看来政策还是有一定作用的。
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Activity: 78
Merit: 10
22日讯,据环保部,13个城市平均优良天数比例为68.5%,同比上升31.6个百分点。PM2.5浓度为60微克/立方米,同比下降41.2%。北京市11月优良天数比例为80.0%,同比上升36.7个百分点。
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