杭州市主城区道路绿化树种组成与VOCs成分分析

Analysis of Urban Landscape Species Composition and Their Volatile Organic Compounds Component in Hangzhou

为分析杭州市主城区道路绿化树种叶表面区域的VOCs成分、研究VOCs与城市道路绿化的关系,文章对该地区道路绿化资源进行调查,并采用气相色谱质谱联用仪(GC/MS)对主要绿化树种叶表面区域的VOCs进行测定,结果显示,杭州主城区的主要乔木为香樟、悬铃木、朴树、无患子、栾树、枫杨、雪松、玉兰、银杏,主要灌木为红叶石楠、金森女贞、红花檵木、月季、无刺枸骨、紫薇、紫叶李、桂花、金边黄杨;在这些树种叶表面区域检测到的VOCs可分为卤烃类、芳烃类、醛类、烷烃类、酮类、酯类、烯烃类和其他类;在现有的主要树种中,挥发物质相对较少的是香樟、悬铃木、朴树、金森女贞、红花檵木、无刺枸骨、桂花,挥发物质相对较多的则是雪松、枫杨、紫叶李、金边黄杨等,研究结果对城市道路绿化植物的筛选具有重要指导意义。

In order to analyze the VOCs component in the leaf surface area of urban landscape species along urban roads in Hangzhou City and study the relationship between VOCs and the urban road landscaping,the authors investigate the landscaping resources along the roads,and measure the VOCs in the leaf surface area of main road landscaping tree species using gas chromatography-mass spectrometry(GC/MS).The results show that there are 9 trees species found in urban roads in Hangzhou,including Cinnamomum camphora,Platanus acerifolia,Celtis sinensis,Sapindus mukorossi,Koelreuteria paniculata,Pterocarya stenoptera,Cedrus deodara,Magnolia denudata and Ginkgo biloba,and 9 shrub species where are Photinia×fraseri,Ligustrum japonicum‘Howardii’,Loropetalum chinense var.rubrum,Rosa chinensis,Ilex corunta var.fortunei,Lagerstroemia indica,Prunus cerasifera,Osmanthus frangrans and Buxus megistophylla.The VOCs detected on the leaf surface of these species include halogenated hydrocarbons,aldehydes,ketones,aromatic hydrocarbons,alkenes and other types.Among the main tree species found now,C.camphora,Platanus Orientalis,L.japonicum‘Howardii’,L.chinense var.Rubrum,Ilex corunta var.Fortunei,and O.frangrans have the relatively less volatile substances,while C.deodara,P.stenoptera,P.cerasifera,and B.megistophylla have relatively more.These results will be of great guiding significance to the selection of urban landscaping plants.