论文部分内容阅读
近年来,能源消耗的不断增长,导致污染物排放居高不下,空气质量急剧恶化,特别是北京市大气污染物浓度一直处于较高水平。为全面落实《中国人民共和国大气污染防治法》及《北京市大气污染防治条例》,根据《北京市2013~2017年清洁空气行动计划》要求,自2015年1月起,新增非道路动力机械必须达到四阶段排放标准要求,未达到排放标准的非道路动力机械,依法禁止在京销售和使用,这
In recent years, the continuous increase of energy consumption has led to the high pollutant emissions and the sharp deterioration of air quality. In particular, the concentration of air pollutants in Beijing has been at a relatively high level. In order to fully implement the “Law of the People’s Republic of China on Prevention and Control of Air Pollution” and the “Regulations of Beijing Municipality on Prevention and Control of Air Pollution”, according to the requirements of Beijing’s Clean Air Action Plan for 2013 ~ 2017, since January 2015, new non-road power machinery Must meet the requirements of the four stage emission standards, non-road power machinery does not meet the emission standards, according to the law to prohibit the sale and use in Beijing, which