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孙华江, 黄玉洁, 江 波, 李国庆. 杭州植物园典型城市森林内PM2.5和PM10水平梯度动态变化特征[J]. 浙江林业科技, 2020, 40(1): 41-48. DOI: 10.3969/j.issn.1001-3776.2020.01.007
引用本文: 孙华江, 黄玉洁, 江 波, 李国庆. 杭州植物园典型城市森林内PM2.5和PM10水平梯度动态变化特征[J]. 浙江林业科技, 2020, 40(1): 41-48. DOI: 10.3969/j.issn.1001-3776.2020.01.007
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SUN Hua-jiang, HUNAG Yu-jie, JIANG Bo, LI Guo-qing. Dynamic Variation of PM2.5 and PM10 Concentrations with Different Distance in Hangzhou Botanical Garden[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(1): 41-48. DOI: 10.3969/j.issn.1001-3776.2020.01.007
Citation: SUN Hua-jiang, HUNAG Yu-jie, JIANG Bo, LI Guo-qing. Dynamic Variation of PM2.5 and PM10 Concentrations with Different Distance in Hangzhou Botanical Garden[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(1): 41-48. DOI: 10.3969/j.issn.1001-3776.2020.01.007
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杭州植物园典型城市森林内PM2.5和PM10水平梯度动态变化特征

Dynamic Variation of PM2.5 and PM10 Concentrations with Different Distance in Hangzhou Botanical Garden

    摘要
  • 摘要: 为研究城市森林对PM2.5 和PM10 的吸附消减作用以及探究城市林带消减颗粒物的有效半径范围，选择紧邻交通干道玉古路的杭州植物园木犀专类园作为试验监测点，于2018 年的4-5 月（春季）和7-8 月（夏季），在林缘向林内垂直于道路方向0 m，100 m，200 m 处布设3 个监测点，在春季和夏季对梯度点上PM2.5 与PM10 浓度的分布与变化进行监测，分析其浓度变化与绿地斑块宽度及相关气候因子之间的关系。结果表明：（1）城市森林内春季PM2.5 和PM10 浓度均显著高于夏季（P＜0.05）。春季两种颗粒物浓度日变化总体呈下降趋势，夏季早晚偏高；春季PM2.5 浓度在林内100 m 处最高，PM10 浓度在0 m 处最高；夏季两种颗粒物浓度均为0 m 处最高，200m 处最低，符合距离传播规律；（2）夏季绿地对PM2.5 和PM10 浓度的消减效率显著高于春季（P＜0.05），且绿地对PM2.5 和PM10 浓度的最高消减效率均出现在夏季200 m 梯度。

     

    Abstract: For studying effect of urban forest on removal of PM2.5 and PM10 and its effective distance, Osmanthus fragrans Garden in Hangzhou Botanical Garden, Zhejiang province, next to Yugu Road was selected for monitoring distribution and variation of PM2.5 and PM10 concentration with 0, 100 and 200 m form the edge to the center of the Garden in the spring and summer in 2018.The results showed that PM2.5 and PM10 concentration in spring was significantly higher than that in summer.In spring, diurnal variation of PM2.5 and PM10 concentration decreased from 9:00 to 17:00, while in the summer, their concentration was higher at 9:00 and 17:00.In spring, PM2.5 was the highest in 100 m from the edge of Garden, PM10 in 0 m.In summer, PM2.5 and PM10 concentration was the highest in 0 m, the lowest in 200 m.The removal efficiency of PM2.5 and PM10 concentrations of green space in summer was significantly higher than that in spring (P < 0.05).The maximum removal efficiency of green space on PM2.5 and PM10 was in 200 m in summer.

     

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