城市街道峡谷PM_(2.5)时空分布特征与空气质量评价  

The Spatiotemporal Distribution Characteristics of PM_(2.5) and Related Air Quality Evaluation in Urban Street Canyons

作　　者：潘辉 王薇[2] 胡春 PAN Hui;WANG Wei;HU Chun

机构地区：[1]安徽建筑大学建筑与规划学院 [2]合肥工业大学建筑与艺术学院

出　　处：《住宅科技》2023年第2期42-47,共6页Housing Science

基　　金：2022年度安徽省住房城乡建设科学技术计划项目“基于全寿命期的低碳建筑增量成本分析研究”(编号:2022-RK028);“夏热冬冷地区公共建筑运行阶段碳排放计算方法和减碳策略研究”(编号:2022-RK029);安徽省高校省级自然科学研究项目一般项目“降雨速渗目标下不同地表雨水优化利用研究”(编号:KJ2019JD07);2021年安徽省教育厅研究生科研项目“基于细颗粒物模拟的城市地铁站域空间形态研究”(编号:YJS20210501)。

摘　　要：街道峡谷是城市构成部分之一,其特殊的环境容易造成污染物聚集,使沿街居民及行人增加健康风险。文章以街道峡谷内的PM_(2.5)为研究对象,于2022年春季在合肥市庐阳区亳州路街道设置4个固定式监测样点,根据实际监测数据对春季合肥市街道峡谷的PM_(2.5)时空分布特征进行研究,分析环境因素的影响并进行空气质量评价。结果表明:建筑形态、气象因素、车流量、道路绿化等环境因素均与PM_(2.5)质量浓度具有一定关联性,对未来城市空气质量预测及优化起到一定的辅助作用。Street canyons are one part of the urban structure.They have a special environment prone to the accumulation of pollutants,which will increase the health risks of residents and pedestrians alongside the streets.This paper takes PM_(2.5)of street canyons as the research object and 4 fixed points were set for monitoring at Bozhou Road,Luyang District,Hefei in the spring of 2022.Actual monitoring data area are made use of in the research on the spatiotemporal characteristics of PM_(2.5)at the street canyons of Hefei City in the spring,and an analysis is carried out to evaluate the air quality together with the influence of environmental factors.The result shows that the building forms,meteorological factors,traffic flows,and road greening all play a certain role of relativity to the concentration of PM_(2.5),and the conclusion is that this study will have certain auxiliary benefit for the prediction and optimization of future cities’air quality.

关 键 词：街道峡谷 PM_(2.5) 时空分布 空气质量评价 AQI 

分 类 号：X513[环境科学与工程—环境工程] X823