徐州市主要园林植物滞尘能力的初步研究

目的]探讨徐州市主要园林植物的滞尘作用及其与生态环境之间的关系。方法]以徐州市主要园林植物为研究对象,通过采样调查和实验室分析,对徐州市主要园林绿化植物滞尘能力进行初步研究。结果]不同树种的单位面积滞尘量、单株树木滞尘量均存在较大差异,乔木中,以女贞、侧柏、雪松、悬铃木和国槐的滞尘能力较强;灌木中,以珊瑚树、海桐、大叶黄杨和紫薇等的滞尘能力较强。同一树种在不同地点的滞尘能力表现出明显差异,说明绿化树种的滞尘能力不仅与树种自身有关,还与其周围环境质量有关。同一树种不同径阶树木的滞尘能力也有一定差异。结论]不同类型树种的滞尘能力存在较大差异,其大小顺序为:灌木>常绿乔木>落叶乔木。

Primary Study on the Dust-retention Abilities of the Main Garden Plants in Xuzhou City

Objective] The study aimed to discuss the dust-retention action of the main garden plants in Xuzhou city and its relation with ecological environment.Method] With the main landscape plants in Xuzhou city as study objects,the dust-retention abilities of the main garden plants in Xuzhou city was studied preliminarily by sampling investigation and laboratory analysis.Result] The dust-retention amounts per unit area and the dust-retention amounts per plant of different tree species had bigger difference.Among trees,the dust-retention abilities of Ligustrum lucidum,Platycladus orientalis,Cedrus deodara,Platanus hispauiea and Spohora japonica were stronger.Among shrubs,the dust-retention abilities of Viburnum odoratissimum,Pittosporum tobira,Euonymus japonicus and Lagerstroemia indica were stronger.The dust-retention abilities of the same tree species showed significant difference in different places,indicating that the dust-retention abilities of greening tree species not only related to tree species,but also related to the environmental quality around them.The dust-retention abilities of the same tree species with different diameter calsses had some difference.Conclusion] The dust-retention abilities of tree species in different types had bigger difference and they were shrubs > evergreen trees > defoliate trees.