【摘要】 为评估北京市空气质量监测站点布局的合理性,对比分析北京市2014年8月-2015年7月市内国家级和全市级空气质量数据,结果表明:全市级监测PM_2.5数据高于国家级监测数据5.5μg/m³（7%）,冬季差异最大（15%）,国家级站点数据对北京市南部地区评估结果偏低32.5%,北部地区评估结果偏高8.7%;结合监测站点所在地区的污染源、天气扩散条件和常住人口等因素分析,北京市北部地区应增设国家级监测站点,南部地区应对国家级监测网络站点进行加密。更多还原

【Abstract】 To evaluate the rationality of Beijing air quality monitoring site layout, the national air quality monitoring sites network（NS） and monitoring sites network（AS） evaluating air quality of each county in Beijing from August 2014 to July 2015 were compared and analyzed.The results show that the average PM_2.5 concentration from AS is 5.5 μg/m³（6.9%） higher than that from NS.The concentration differences between AS and NS are the largest in winter, which is 15% in average.Comparing to AS, data from NS sites lead to a 33% reduction in PM_2.5 concentration in southern Beijing and a 8.7% increase in concentration in northern area. Based on the analysis of the pollution sources, atmospheric conditions and resident population in the area where the monitoring site is located, there should be more NS monitoring sites in northern counties of Beijing and should be densely-distributed NS monitoring sites in southern counties.更多还原