| APEC期间北京空气质量改善对比分析 |
| 摘要点击 3717 全文点击 2248 投稿时间：2015-04-20 修订日期：2015-07-22 |
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| 中文关键词 APEC 强化减排措施 奥体中心 空气质量 PM2.5 |
| 英文关键词 AEPC emission reduction measures Olympic Sports Center air quality PM2.5 |
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| 中文摘要 |
| 为了评估APEC期间强化减排措施对北京空气质量的改善效果,利用2014年11月1~15日中国环境监测总站发布的奥体中心监测点空气质量监测数据,分析其空气质量演变特征,并与2013年同期监测数据进行对比研究. 结果表明:1PM2.5是当前北京最重要的污染物,APEC期间空气质量以优良为主,期间有3次明显的污染过程,与2013年同期相比较有所好转,显示出强化减排措施对北京空气质量的改善有显著的效果; 2与世界卫生组织(WHO)的标准值相比,APEC期间PM2.5有5d在WHO标准值(25 μg ·m-3)以下,而SO2均小于标准值; 3APEC期间,在空气质量为优时PM2.5/PM10小于0.5,且随污染浓度的增加比值逐渐增大,在严重污染情况下PM2.5/PM10达到0.9以上; 4与2013年同期相比,强化减排措施对PM2.5的减少有一定的贡献,但与SO2和CO的减少量相比,颗粒物的减少量又相对较少,NO2减少量相对最小,实施强化减排措施对污染物减排的排序为SO2 >CO >PM >NO2,说明北京空气污染中的PM2.5的来源、影响和减排的复杂性,有待进一步深入研究. |
| 英文摘要 |
| In order to evaluate the effects of the implementation of emission reduction measures and the revolution of air quality of Beijing during APEC, the evolution characteristics of air quality was analyzed based on the hourly monitored readings of Olympic Sports Center from 1 to 15 November 2014 released by Environmental Monitoring Station of China, and compared with that in 2013. The results showed that: ① PM2.5 was the main pollutant in Beijing. The air quality was good during the period of APEC with three obvious pollution events, and it was better than that in the same period in 2013, indicating that the implementation of emission reduction measures had made significant contribution to the improvement of air quality. ② During the period of APEC, the concentrations of PM2.5 of 5 days were below the World Health Organization (WHO) standard (25 μg ·m-3), and the concentration of SO2 met the WHO standard during this time. ③ During the period of APEC, the ratio of PM2.5 and PM10 was less than 0.5 when the air quality was good, and gradually increased with the increasing pollution level. The ratio reached 0.9 when the air was seriously polluted. 4 Compared with the same time in 2013, although the implementation of emission reduction measures made contribution to the reduction of the concentration of PM2.5, its contributions to the reduction of SO2 and CO concentration were much more obvious than that of PM2.5, and it had little impact on the reduction of NO2 concentration, and the reduction order of pollutants emission was SO2 >CO >PM >NO2, indicating that the sources, effects and emission reduction of PM2.5 were complex, and further studies are required. |
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