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吴翠蓉, 江波, 张露, 孙华江, 黄玉洁. 杭州8 种绿化树种滞纳TSP 和PM1、PM2.5、PM10 的效应研究[J]. 浙江林业科技, 2020, 40(5): 13-20. DOI: 10.3969/j.issn.1001-3776.2020.05.003
引用本文: 吴翠蓉, 江波, 张露, 孙华江, 黄玉洁. 杭州8 种绿化树种滞纳TSP 和PM1、PM2.5、PM10 的效应研究[J]. 浙江林业科技, 2020, 40(5): 13-20. DOI: 10.3969/j.issn.1001-3776.2020.05.003
WU Cui-rong, JIANG Bo, ZHANG Lu, SUN Hua-jiang, HUANG Yu-jie. Study on Adsorption of TSP, PM1, PM2.5 and PM10 by 8 Greening Tree Species in Hangzhou[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(5): 13-20. DOI: 10.3969/j.issn.1001-3776.2020.05.003
Citation: WU Cui-rong, JIANG Bo, ZHANG Lu, SUN Hua-jiang, HUANG Yu-jie. Study on Adsorption of TSP, PM1, PM2.5 and PM10 by 8 Greening Tree Species in Hangzhou[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(5): 13-20. DOI: 10.3969/j.issn.1001-3776.2020.05.003

杭州8 种绿化树种滞纳TSP 和PM1、PM2.5、PM10 的效应研究

Study on Adsorption of TSP, PM1, PM2.5 and PM10 by 8 Greening Tree Species in Hangzhou

  • 摘要: 为研究杭州市绿化树种叶片对各径级大气颗粒物的滞纳效应,以银杏 Ginkgo biloba,海棠花 Malus spectabilis,东京樱花 Cerasus×yedoensis,玉兰 Yulania denudate,枫香树 Liquidambar formosana,樟 Cinnamomum camphora,木犀 Osmanthus fragrans和乐昌含笑 Michelia chapensis 8个树种为研究材料,使用气溶胶再发生器对其叶片上 TSP, PM10,PM2.5和 PM1的滞留量进行测定,从单位叶面积和单位绿化面积尺度比较各树种对各粒级颗粒物的滞留能力,并通过扫描电镜观察比较样本叶片的微观结构,分析气孔密度、气孔面积、绒毛密度等叶面特征对植物滞尘能力的影响。结果表明,从单位叶面积滞尘量来看,木犀和海棠花单位叶面积滞纳 TSP和 PM10能力最强,樟最低,滞纳 PM2.5能力海棠花显著高于其他树种(P<0.05),其次为木犀,枫香树和樟较低,各树种叶片滞纳 PM1的能力排序与 PM2.5基本一致;从单位绿地面积滞尘量来看,木犀滞纳 TSP和 PM10能力最强,显著高于其他树种(P<0.05),海棠花、樟和银杏较低, PM2.5,PM1滞纳能力趋势一致,均为木犀最高,其次为海棠花、枫香树、乐昌含笑、银杏、东京樱花,樟和玉兰较低;银杏和海棠花叶片对粒径 2.5 μm及以下小颗粒占总滞尘量的比例显著高于其他树种( P<0.05),樟和玉兰较低;不同树种单位叶面积颗粒物滞留量与气孔密度、气孔面积和绒毛密度呈正相关关系;气孔密度与 TSP含量呈显著正相关( P<0.05)。

     

    Abstract: In May 2019, leaves of Ginkgo biloba, Malus spectabilis, Cerasus×yedoensis, Yulania denudate, Liquidambar formosana, Cinnamomum camphora, Osmanthus fragrans and Michelia chapensis in 2 places in Hangzhou, Zhejiang province were collected 7 days after rain. Determinations on TSP, PM1, PM2.5, PM10 content were implemented by aerosol regenerator. The result showed that on the terms of per unit leaf area, O. fragrans and M. spectabilis had the strongest ability to absorb TSP and PM10, while C. camphora was the lowest. The ability of M. spectabilis to absorb PM2.5 was significantly higher than that of the other tree species (P < 0.01), followed by O. fragrans, L. formosana and C. camphora were lowest, the PM1 adsorption capacity was similar with that of PM2.5. On the terms of per unit green area, the contents of TSP and PM10 of O. fragrans was significantly higher than that of other tree species. M. spectabilis, C. camphora and G. biloba had lower content. PM2.5 and PM1 adsorption capacity of O. fragrans was the highest, followed by M. spectabilis, L. formosana, M. chapensis, G. biloba, C. × yedoensis. C. camphora and Y. denudate. The proportion of small particles with size of 2.5 μm or less in G. biloba and M. spectabilis was significantly higher than that in the other tree species, while that in C. camphora and Y. denudate was the lowest. The retention of particulate matter per unit leaf area had positive relation with stomatal density, stomatal area and villus density of different tree species. There was a significant positive correlation between stomatal density and TSP content.

     

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