城市绿地对空气负离子水平的影响  

Effect of Urban Green Space on Aero-anion Concentration

作　　者：蔡春菊[1] 王成[2] 陶康华[3] 

机构地区：[1]国际竹藤网络中心国家林业局竹藤科学与技术重点实验室,北京100102 [2]中国林业科学研究院林业研究所城市林业研究室,北京100091 [3]上海师范大学城市信息研究中心,上海200234

出　　处：《城市环境与城市生态》2007年第5期6-9,共4页Urban Environment & Urban Ecology

基　　金：国家"十五"攻关生态农业技术体系研究与示范(2002BA516)项目子课题;"中国森林生态网络体系建设‘点’的研究与示范"(2002BA516A15);江苏省科委软科学项目"扬州现代林业发展模式研究("BR2003011)

摘　　要：对扬州市不同绿地类型中空气负离子水平研究表明:城郊林和公园片林中空气负离子浓度比城区其它类型绿地高出1倍左右,树龄、郁闭度和树高均是影响空气负离子浓度的重要因子,城区绿地比城郊绿地中空气清洁度低。绿化能显著影响空气负离子浓度和空气清洁度水平,各样地的测定值均为对照区的1～3倍,广场绿地和城郊林中空气清洁度达到对照区的3～4倍,且林内比林缘空气负离子浓度有显著提高。不同植被组成的绿地中空气负离子水平为高大乔木最优,灌草次之,空旷地最差。To study aero-anion concentration at different type of urban green spaces in Yangzhou,the aero-anion concentration in four different kinds of forests at suburban area and urban public park were higher than that of urban green spaces.The tree age,canopy density and tree height were the dominant factors affecting the aero-anion concentration and CI value.The CI value for Urban green space was lower than that of suburban sample lands.Urban greening could remarkably influence the aero-anion concentration as well as the CI value at all sample zones.The two indexes values were about one to three times in comparison with non-greening zones.The CI value measured at square greening and suburban forest(Deodar Cendar) attained three to four times of the control treatment and the aero-anion concentrations of the centre of the forests were significantly higher than at the edge of the forests.The level of aero-anion concentration in the urban green space formed by different vegetations was tall trees>shrub and grass >open space.

关 键 词：城市绿地 空气负离子 空气清洁度 

分 类 号：P402[天文地球—大气物理学与大气环境]