Study on construction of ecological greenland and environmental effect along the grand canal in yang

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Frontier of Environmental Science June 2013, Volume 2, Issue 2, PP.6-10

Study on Construction of Ecological Greenland and Environmental Effect along the Grand Canal in Yangzhou Dasheng Zhao 1, Xiaodi He 2, Mei Xu 3#, Lei Cao 3, Fan Yang 3 1. Yangzhou City Afforest Office, Yangzhou Jiangsu 225009, China 2. Yangzhou University, Yangzhou Jiangsu 225009, China 3. Yangzhou City Afforest Maintain Office, Yangzhou Jiangsu 225003, China #

Email: he8068@163.com

Abstract The construction pattern of ecological environment forest along the Grand Canal in Yangzhou city has embodied the special local ecological landscape view, as well outlined the features of this historical and cultural region characterized with abundant water and large plant cover. The study indicated that trees in greenbelt have prevention, intercept and absorption effect on mote in air, with desirable ecological environment especially in the multiple layered forest, owing to its dust detention effect superior to that of trees in garden, lawn more than 20%, and 10.7%, respectively; as well as its noise reduction effect less than 7 dB and 4 dB, separately, compared to cement garden road and lawn, and its pronounced inhibitory function explained by the fact that the amount of bacteria inside the trees is decreased by 10.08-99.71% compared to that outside the woodlands 15 m; and even less 23.59-99.78% than that in the street without woodlands. Keywords: Grand Canal Scenic Belt; Ecological Greenland; Environmental Effect

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扬州古运河风光带生态绿地建设及环境效应研究 赵大胜1,何小弟2,徐梅3,曹磊3,杨帆3 1.扬州市城市绿化办公室,江苏 扬州 225009 2.扬州大学,江苏 扬州 225009 3.扬州市城市绿化养护管理处,江苏 扬州 225003 摘

要:扬州古运河风光带的绿地建设类型、绿地树种配置和绿地建设模式,体现了“水、绿、古、文、秀”的地域生

态景观特色,为生态城市绿地建设提供了科学有效的定量评价依据。研究结果表明,绿地树木对空气微尘有着显著的阻 挡、截留和吸滞作用,复层林地模式生态环境效应优良:滞尘效应优于园路近20个百分点、优于草坪10.7个百分点;减噪 效果可较硬质园路区降低噪音约7dB,可较草坪区降低噪音约4dB;抑菌功能显著,林内空气细菌含量比距林地15m处减 少10.08-99.71%,比无林地的街道对照少23.59-99.78%。 关键词:古运河风光带;生态绿地;环境效应

引言 城市绿地建设的宗旨是要改善城市环境,为居民提供舒适健康的生活环境,将有利于人体健康放在第一 位。构建生态绿地模式对改善城市空气质量、保障市民身心健康具有非常重要的意义,在城市绿化材料选择 时要对不同植物组合的关系进行深入细致的研究,充分彰显城市绿地“以人为本,生态优先”的目的[1]。 *

基金项目:江苏省基础研究计划(自然科学基金)重点项目(BK2010038) -6http://www.ivypub.org/fes


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