中文摘要：

以天津市5种常绿灌木为研究对象,通过实地采样与实验室分析,对5种常绿灌木不同季节的滞尘能力进行比较研究,同时探讨了不同季节蒙尘对5种常绿灌木叶绿素含量及抗坏血酸含量的影响。结果表明：不同植物滞尘能力差异显著（P〈0.05）,5种常绿灌木年平均滞尘能力由大到小依次为小叶黄杨7.81mg·cm^-2、小龙柏5.80mg·cm^-2、沙地柏3.68mg·cm^-2、大叶黄杨3.66mg·cm^-2、凤尾兰2.18mg·cm^-2,凤尾兰仅为小叶黄杨的28%。不同季节植物表现出了不同的滞尘能力,大叶黄杨、沙地柏、小龙柏为秋季〉冬季〉春季〉夏季,凤尾兰为冬季〉春季〉秋季〉夏季,小叶黄杨为冬季〉秋季〉春季〉夏季。不同植物之间抗坏血酸含量及叶绿素含量差异显著（P〈0.05）,夏季含量明显高于其它季节,抗坏血酸含量、叶绿素含量均与滞尘量呈显著负相关。

英文摘要：

Taking 5 evergreen shrubs as the main research objects in Tianjin,through field sampling and laboratory analysis research methods,the dust-retention capacity of 5 evergreen shrubs in different seasons were compared.It also discussed total chlorophyll content and ascorbic acid content of 5 evergreen shrubs in the different seasons.The results showed that the dust retention capacity of different plants were significant difference（P〈0.05）and 5 evergreen shrubs average annual dust retention capacity from large to small in turn,Buxus sinica var.Parvifolia was 7.81mg·cm^-2,Sabina chinensis（L.）Ant.var.chinensis cv.Kaizuca was 5.80mg·cm^-2 and Sabina vulgaris was 3.68mg·cm^-2,Buxus megistophylla was 3.66mg·cm^-2,Yucca gloriosa was 2.18mg·cm^-2,Yucca gloriosa was only 28% of Buxus sinicavar.Parvifolia.Dustretention capacity of 5 plants in different seasons were different,Buxus megistophylla,Sabina vulgaris,Sabina chinensis（L.）Ant.var.chinensis cv.Kaizuca were autumn〉winter〉spring〉summer,Yucca gloriosa was winter〉spring〉autumn〉summer,Buxus sinica var.Parvifolia was winter〉autumn〉spring〉summer.Ascorbic acid content and total chlorophyll content were significantly different among 5 plants（P〈0.05）.Contents of summer were significantly higher than that of other seasons,ascorbic acid content and dust-retention capacity,chlorophyll content and dust-retention capacity were significantly negative correlation.