乔木滞留大气颗粒物能力及其与叶表面微结构关系

编号 lyqk009912

中文标题 乔木滞留大气颗粒物能力及其与叶表面微结构关系

作者 李晓璐  叶锦东  章剑  周毅烈  袁楚阳  于慧  张天然  黄芳  张贵豪  邵锋 

作者单位 1. 浙江农林大学风景园林与建筑学院 杭州 311300;
2. 北京林业大学园林学院 北京 10008;
3. 缙云县林业局 浙江丽水 321400

期刊名称 中国城市林业 

年份 2022 

卷号 20

期号 3

栏目名称 研究论文 

中文摘要 植物在净化城市大气颗粒物方面发挥着重要作用,为了明晰不同植物滞留大气颗粒物的能力差异及其与叶表面微观结构的关系,文章以杭州地区10种常见乔木为研究对象,采用重量分析法,结合SEM/EDS技术和ImageJ软件,观测叶表面微观结构,量化植物滞留大气颗粒物能力,并分析颗粒物的来源。结果表明:10种乔木单位叶面积滞留颗粒物质量存在显著差异,其中二球悬铃木、榔榆和桂花滞留各粒径颗粒物的能力均较强,水杉和无患子滞留TSP和PM₁₀的能力较强,玉兰和木荷滞留各粒径颗粒物的能力均较弱;叶表面存在皱褶、密集深沟槽、蜡质和突起等结构的乔木,有利于颗粒物的滞留,而叶表面平坦、沟槽较宽的乔木滞留颗粒物的能力较弱;叶片表面的沟槽宽度与叶片滞留PM_2.5质量呈显著负相关关系;C和O元素存在于所有被测颗粒物中,且含量较高;大多数乔木叶片上存在N、Mg、Al、Si和K元素;叶片上滞留的颗粒物主要来自汽车尾气和土壤扬尘。因此,在城市绿化建设中应结合对滞留颗粒物有利的叶表面微观结构特征选择并推广相应树种。

关键词 乔木  大气颗粒物  滞留能力  叶表面微结构  杭州 

基金项目 国家自然科学基金基于局地气候区分类的城市热环境时空变化特征及其主要景观驱动因子研究(51508515)

英文标题 Atmospheric Particle Retention Capacity of Trees and Its Relationship with Leaf Surface Microstructure

作者英文名 Li Xiaolu, Ye Jindong, Zhang Jian, Zhou Yilie, Yuan Chuyang, Yu Hui, Zhang Tianran, Huang Fang, Zhang Guihao, Shao Feng

单位英文名 1. School of Landscape Architecture, Zhejiang Agricultureand Forestry University, Hangzhou 311300, China;
2. College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;
3. Jinyun County Forestry Bureau, Lishui 321400, Zhejiang, China

英文摘要 Plants play an important role in purifying urban atmospheric particulate matter (PM). To clarify the difference in the atmospheric particle retention capacity of different trees species and its relationship with leaf surface microstructure, this study selects ten common tree species in Hangzhou to observe the microstructure of leaf surface, evaluate the PM retention capacity and analyze the sources of particulate matter using the rinse and weigh method combined with SEM/EDS technology and ImageJ software. The results show that there are significant differences in the mass of retained particulate matter per unit leaf area among the ten species. Platanus acerifolia, Ulmus parvifolia and Osmanthus fragrans present a high retention capacity of the PM of all sizes. Metasequoia glyptostroboides and Sapindus mukorossi have higher capacity to retain TSP and PM₁₀, while Magnolia denudata and Schima superba have a low capacity to retain particles of all sizes. The species whose leaf surfaces have a large number of wrinkles, dense deep grooves, wax, protrusions, etc. are good for particle retention, while those with flat and wide-groove leaf surface has a low capacity to retain particles. The adaxial groove width of leaf surface has a significant negative correlation with the retained PM_2.5 mass. C and O elements are found in all the particles determined, whose content is high, and N, Mg, Al, Si, and K elements are present on the leaves of most trees. The main sources of particulate matter retained on the leaves are automobile exhaust and soil dust. Therefore, tree species with leaf surface microstructure beneficial to PM retention should be selected and extended in urban landscaping.

英文关键词 tree;atmospheric particulate matter;retention capacity;leaf surface microstructure;Hangzhou

起始页码 22

截止页码 28,120

投稿时间 2020-09-06 00:00:00

作者简介 李晓璐(1996-),女,博士生,研究方向为园林植物应用与园林生态。E-mail:xiaoluli@bjfu.edu.cn

通讯作者介绍 邵锋(1979-),男,博士,副教授,研究方向为园林植物应用与园林生态。E-mail:shaofeng@zafu.edu.cn

E-mail shaofeng@zafu.edu.cn

DOI 10.12169/zgcsly.2020.09.06.0001

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