银川市几种灌木绿化树种的滞尘能力比较

Comparison of Dust Removal Effect of Several shrubby Tree Species in Yinchuan

对银川市四种灌木绿化树种在两个不同的粉尘降尘区滞尘能力进行测定与分析,结果表明：各树种在不同的粉尘降尘区均表现出明显的滞尘效应;树种不同,其滞尘能力表现出明显的差异;树种的滞尘能力与降尘环境、滞尘时间等因素有关。随着时间的延长,四树种在不同的降尘区的滞尘能力呈上升趋势。综合分析认为,不同降尘区的降尘情况为：丽景街降尘较重,北京路降尘较轻;几种灌木绿化树种的滞尘能力由强到弱的顺序为：金叶女贞〉金银木〉连翘〉红瑞木。

Dust absorption abilities of four shrubby tree species in two dust areas in summer season in Yinchuan were measured and analyzed.The results showed that shrubby tree species all had remarkable difference of dust removal effect in different dust region.Dust absorption abilities of shrubby tree species were related to environment and the time of dust absorption.As the time delay,dust absorption ability of shrubby tree species were increased in different dust region.It could be concluded that Lijing Street dust serious,Beijing Road dust less;the order of dust absorption ability of four tree species from strong to weak were：Ligustrum×vicaryi Lonicera maackii（Rupr.）Maxim Forsythia suspensa（Thunb.） vahl. Cornus alba