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为厘清多种总平面布局对PM2.5在居住区内部地面的扩散有何影响,该文对北京市同一区域6种典型布局的居住区进行了PM2.5质量浓度历时1年的“同时性”监测。结果表明:1不同布局的居住区,其地面PM2.5质量浓度分布及扩散有显著差别。2春、夏、秋季,多组团集中式布局的居住区,其PM2.5质量浓度较高,行列式、合院式较低。冬季则反之亦然。3风环境、地面气温对PM2.5的分布及扩散具有较大影响。同时,影响居住区PM2.5分布及扩散的主要原因包括风环境及地面气温等。
To clarify the effect of multiple general layouts on the diffusion of PM2.5 in the interior of residential area, six typical residential areas in the same area of Beijing were surveyed in this paper. The PM2.5 concentration of 1 year Sexual "monitoring. The results showed that: 1, residential buildings with different layouts had significant differences in the distribution and diffusion of PM2.5 mass concentrations in the residential areas. In spring, summer and autumn, the concentration of PM2.5 in residential areas with multi-group concentration layout is higher, and the determinant and courtyard-type are lower. The winter is vice versa. 3 wind environment, the surface temperature of PM2.5 distribution and diffusion have a greater impact. Meanwhile, the main reasons that affect the distribution and spread of PM2.5 in residential areas include the wind environment and the ground temperature.