中新网社会新闻: 北京连续三年臭氧浓度下降

中新网社会新闻

北京连续三年臭氧浓度下降 Jan 22nd 2019, 18:14 　　本报讯(记者张航)在昨天举行的生态环境部新年首场新闻发布会上，生态环境部大气环境管理司司长刘炳江透露，我国臭氧浓度增幅明显收窄，其中北京市连续三年臭氧浓度持续下降。

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