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Clearing the Air

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摘要 According to a report on the national air quality by the Ministry of Ecology and Environment,from January to December 2022,cities at and above the prefecture level saw 86.5 percent of days with air quality at moderate or good levels.The former level refers to an air quality index between 51 and 100 and therefore acceptable air quality.
作者 Lan Xinzhen
机构地区 不详
出处 《Beijing Review》 2023年第11期29-29,共1页 北京周报(英文版)
关键词 ECOLOGY QUALITY QUALITY
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