2022年12月Dec.2022第46卷第6期Vol.46,No.6热带农业工热带农业工程TROPICALAGRICULTURALENCINEERING兰州市4种行道树滞尘能力研究①刘涵科②马瑞③张翠(甘肃农业大学林学院甘肃兰州730070)摘要为给城市绿化树种的选择提供参考,研究采集了兰州市安宁区(文化区)、西固区(工业区)主干道小叶黄杨、紫叶小檗、卫矛、国槐4种常见行道树的叶片,采用水洗脱法测定了4种植物叶片的滞尘量,通过扫描电镜收集了其叶表面微结构图像,对冠层高度、区域环境、叶表面结构特征与滞尘量的关系进行了分析。结果发现,乔木树种国槐的滞尘量随高度变化的变化幅度最大,小叶黄杨、紫叶小檗、卫矛3种灌木的垂直变化幅度相对较小;小叶黄杨、紫叶小檗、卫矛、国槐在安宁区、西固区滞尘量的最大值分别为5.85、4.32、3.37、3.01g/m2和8.18、5.51、4.64、4.40g/m2。4种植物单位叶面积滞尘量随冠层高度的增加而降低;叶表气孔宽度、沟槽宽度对滞尘量影响不显著(p>0.05),气孔长度对滞尘量影响显著(p<0.05)、气孔密度对滞尘量影响极显著(p<0.01)。关键词兰州市;行道树;滞尘量;叶表面微结构中图分类号S732StudyontheDustRetentionCapacityofSidewalkPlantinginLanzhouLIUHankeMARuiZHANGCui(CollegeofForestry,GansuAgricultureUniversity,Lanzhou,Gansu730070)AbstractToprovidereferencefortheselectionofurbangreeningtreespecies.Thisstudycollectedleavesof4commonstreettrees,namelyPhellodendronChinense,PhellodendronPurpurea,WeigeliaSpp,andSo‐phoraJaponica,fromthemainroadsinAnningDistrict(culturalregion)andXiguDistrict(industrialre‐gion)ofLanzhouCity.Rearchersusethewaterelutionmethodtodeterminetheduststagnationabilityoftheleavesofthefourplants.Theresultshowsthat.TheamountofduststagnationofarborspeciesSophoraJaponicavarieswithheight,andtheverticalchangerangeofthreeshrubs:PhellodendronChinense,Phello‐dendronPurpureaandWeigeliaSpparerelativelysmall.ThedustretentionamountsofPhellodendronChi‐nense,PhellodendronPurpurea,WeigeliaSpp,andSophoraJaponicaare5.58,4.32,3.37,3.01g/m2and8.18,5.51,4.64,4.40g/m2inAnningDistrictandXiguDistrict,respectively.Theduststagnationamountsperunitleafareaofthefourplantsdecreasedwiththeincreaseofcanopyheight.Theeffectsofleafsurfacestomatalwidthandgroo...