摘要
以江苏省徐州市为例,选取市区3处交通要道两侧的典型道路绿地,在各绿带不同宽度处设监测点测定PM_(2.5)浓度以探讨道路绿地类型及宽度对其的消减作用。结果表明:PM_(2.5)的消减率与绿地的宽度成正比,道路绿地的宽度在24m及以上能够起到较好的滞留颗粒物作用,"乔+灌+草-乔"结构为主且郁闭度较高的植物配置模式消减效果最好。最后得到"乔+草+灌-乔""乔+灌+草-乔""灌+乔+草-乔""草+乔+灌-乔"等4种消减PM_(2.5)污染的典型道路绿地群落,为城市道路绿地植物配置的选择提供基础数据。
Taking Xuzhou city,Jiangsu Province as an example,this study selected three roads on both sides of the typical urban road green space,in the greenbelt width difference set monitoring point determination of PM2.5concentrations in order to investigate the road green space types and the width of the cut.The results showed that the reduction rate of PM2.5 was proportional to the width of green space.The width of road green space in 24 mand above could be taken to better retention of particles.The green space which taking‘trees＋shrubs＋grass-trees＇ as the structure and having high canopy density was more effective.As a result,the construction of four typical road greenbelt（trees＋grass＋shrubstrees,trees＋shrubs＋grass-trees,shrubs＋trees＋grass-trees,grass＋trees＋shrubs-trees）to reduce the pollution of PM2.5 were built,supporting the configuration mode of city road green plant selection.
出处
《北方园艺》
CAS
北大核心
2016年第24期65-69,共5页
Northern Horticulture
基金
国家自然科学基金资助项目(31500575
31500579)
江苏省自然科学基金资助项目(BK20150231)
