| 摘要: |
| 以杭州西湖风景区花港观鱼公园为研究对象，对比分析节假日与非节假日公园内大气颗粒物（PM2.5、PM10）浓度与游客量、气象因子、植物群落类型的相关性，并从宏观—中观—微观3个层次探究花港观鱼公园大气颗粒物浓度的节假日特征，为城市公园的科学建设提供参考和依据。研究发现：大气颗粒物浓度有明显的节假日效应。宏观方面，杭州主城区元旦节期间大气污染物主要是PM2.5和PM10，节日期间的平均浓度分别为102±41.51μg.m-3、155±64.86μg.m-3，分别是非节日的1.6倍、1.7倍。杭州主城各区受节日影响较大的是余杭区、萧山区和下城区。中观方面，花港观鱼公园节日期间PM2.5和PM10有波峰现象且振幅剧烈呈锯齿状；非节日期间午后出现波谷，上下振幅较小，其影响因子特征表现为：节日期间游客量与大气颗粒物浓度相关性较高，游客游览观光活动对PM10的贡献率更大；气象因子对PM10的影响比PM2.5显著。微观方面，公园内3种不同植物群落类型绿地的PM2.5浓度表现为：密林>纯林>草坪。 |
| 关键词: 城市公园 大气颗粒物浓度 游客量 气象因子 节假日效应 |
| DOI： |
| 分类号:TU986 |
| 基金项目:国家自然科学基金项目（编号 51508515）；浙江省大学生科技创新活动计划（编号 2018R412044） |
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| Characteristics of Atmospheric Particulates Concentration in Urban Parks during Holidays and Festivals |
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WU Haitang1, SUN Fengbin2, YAN Hai1, SHAO Feng3
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1.Zhejiang A&F University;2.Heilongjiang Bayi Agricultural University;3.Beijing Forestry University,
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| Abstract: |
| Choosing the Huagang Guanyu Park in the West Lake scenic spot, Hangzhou, as the object of study, this paper explores the relationship of the concentration of atmospheric particulates (PM2.5 and PM10), tourist volume, meteorological factors and types of plant communities during holidays and non-holidays, and probes into the characteristics of PM in the Huagang Guanyu Park during holidays from the macro, medium and micro views, so as to provide references and basis for the scientific construction of city parks. The results show that the concentration of atmospheric particulates are apparently different during festivals and other days. From the macro view, the main air pollutants of Hangzhou's urban areas during New Year’s Day in 2018 were PM2.5 and PM10, and the average concentrations during the festival were 102±41.51 µg.m-3 and 155±64.86 µg.m-3 respectively, which were 1.6 times and 1.7 times of the non-festival level. Yuhang District, Xiaoshan District and Xiacheng District were the most affected by the festival in Hangzhou. From the medium view, there arose peaks with acute and jagged amplitudes in the concentration of PM2.5 and PM10 in Huagang Guanyu Park during the festival, while there were troughs with smaller amplitudes in the afternoon during the non-festival days. The characteristics of the influencing factors are as follows: tourist volume is more correlated with the concentration of atmospheric particulates during the festival, and the sightseeing activities have greater impacts on the PM10; the influence of meteorological factors have a greater impact on PM10 than PM2.5. From the micro view, the concentration of PM2.5 on three pieces of green spaces with different plant communities are as follows: dense jungle > pure woods > lawn. |
| Key words: city park atmospheric particulates concentration tourist volume meteorological factors holiday effect |
| 引用本文: | 吴海堂,孙丰宾,晏海,邵锋.城市公园大气颗粒物浓度的节假日特征[J].风景园林，2019，26（3）：87-92. |
| WU Haitang,SUN Fengbin,YAN Hai,SHAO Feng.Characteristics of Atmospheric Particulates Concentration in Urban Parks during Holidays and Festivals[J].Landscape Architecture Journal, 2019, 26(3):87-92. |
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