三种园林绿化树种抗二氧化硫污染能力比较试验

摘要

为了探究园林绿化树种对二氧化硫（SO2）污染的抗性，以梓树、黄杨、女贞3种常用城市园林苗木为试材，进行SO2静态熏气处理，研究3种园林绿化树种的抗 SO2污染能力。结果表明：随着SO2处理浓度的增加，3种常用城市园林树种叶片的超氧化物歧化酶（SOD）含量、丙二醛（MDA）含量、脯氨酸含量、相对电导率呈逐渐增加的趋势；过氧化物酶（POD ）含量呈下降趋势。3种园林树种抗污染能力的大小顺序为：黄杨＞梓树＞女贞。%In order to study the resistance to SO2 of landscaping tree species ,taking Catalpaovata G .Don ,Bux‐us sinicia Cheng ,L igustrum quihuoui Ait .as test materials ,and they were in the open top chambers by means of fumigating .The results showed that with SO2 concentration increasing ,the superoxide dismutase(SOD) ,ma‐londialdehyde(MDA) ,proline content and relative conductivity gradually increased ,but the Peroxidase (POD) content decreased .The order of resistance to sulfur dioxide of three landscaping trees were that Buxus sinicia Cheng> Catalpaovata G .Don> Ligustrum quihuoui Ait ..