宜州城区5种行道树叶表面特征及滞尘效果比较  

Comparison of the Leaf Surface Features and Dust Retention Effect of Five Common Lane Trees in Yizhou City

作　　者：陆锡东 李萍娇 贺庆梅[1] 牟光福 苏盛[1] 

机构地区：[1]河池学院化学与生物工程学院,广西宜州546300 [2]南丹县城关第二中学,广西南丹547202

出　　处：《河池学院学报》2014年第5期37-43,共7页Journal of Hechi University

基　　金：桂西北特色资源研究与开发实验室资助项目(桂教科研〔2010〕6号);桂西北地方资源保护与利用工程中心资助项目(桂教科研〔2012〕9号);广西高等学校特色课程及专业一体化建设基金资助项目(桂教高教〔2011〕102号);广西教育科学"十二五"规划2013年度立项资助B类课题(2013B026)

摘　　要：为了加强生态园林城市建设,使用差量法、估算法、数理统计法及形态观察法对宜州城区桂花、蝴蝶果、海南蒲桃、小叶榕、高山榕等5种常见行道树叶表面特征及滞尘效果进行比较研究。结果表明:不同树种的单位叶面积滞尘能力差异明显,其平均值的最大值与最小值之间相差达5倍以上;不同叶片的表面结构直接影响该树种的单位叶面积滞尘能力;叶表面结构粗糙的海南蒲桃、蝴蝶果和桂花树,其单位叶面积滞尘量明显大于叶表面结构平滑的高山榕和小叶榕;叶片柔软的海南蒲桃和蝴蝶果,其单位叶面积滞尘量明显大于叶片较硬的桂花树;综合滞尘能力由高到低的排序为:蝴蝶果>海南蒲桃>桂花树>高山榕>小叶榕;就综合滞尘能力而言,蝴蝶果为宜州城区较好的行道树种,但一个地区园林绿化树种的选择,还应综合考虑景观效果、生态经济效益等其他因素。In order to strengthen the construction of ecological city, a comparative study of leaf surface features and dust retention effect of five common lane trees like Osmanthus fragrans, Cleidiocarpon cavaleriei, Syzygium hainanense, Ficus microcarpa var. pusillifolia, and F. altissim in Yizhou city was conducted, adopting difference, estimation, mathematical statistics and morphological observation method respectively. It was found that there were significant differences of leaf dust retention capability per leaf area among these five different lane trees, the average maximum value was much as five times as that of the minimum. Different surface structures of the tree leaves have direct effect on the dust retention. S. hainanense, C. cavaleriei and 0. fragrans which have rougher leaf structures obviously show larger amount of retained dust per leaf area than F. altissima and F. microcarpa var. pusillifolia. And the leaves of S. hainanense and C. cavaleriei are softer than 0. fragrans, and the quantity of retained dust per leaf area of the former is significantly greater than the latter. The descending order of comprehensive leaf dust retention capability of these five street trees was as followed： C. cavaleriei 〉 S. hainanense 〉 0. fragrans 〉 F. altissima 〉 F. microcarpa var. pusillifolia. In terms of comprehensive leaf dust retention capacity, C. cavaleriei is considered to be the preferable lane tree in Yizhou, but the urban greening tree species selection of a district must be considered from landscape effects, ecological and economic benefits, and so on.

关 键 词：宜州城区 行道树 叶表面特征 滞尘能力 

分 类 号：Q948.116[生物学—植物学] X173[环境科学与工程—环境科学]