佛山市主要城市园林植物滞尘效益分析

Effects of Main Urban lanscape Plants on Dust Blocking in Foshan

研究了佛山主要园林植物净化大气环境的生态效应,测定了佛山市15种主要城市绿化植物滞尘能力,采用相关的指标和评价分析方法,建立相关模型,同时对影响植物叶片滞尘能力的有关因子进行了分析和探讨。研究表明,不同地点及不同种类的植物的滞尘量差异显著,乔木树种滞尘量最大,说明乔木植物是滞尘的主体。不同植物滞尘能力的差异与叶片的表面特性(皱纹、粗糙、绒毛、油脂等)及其湿润性有密切关系,滞尘量的多少与树冠总叶面积、枝干分枝角度、树冠形状等有关。

Dusts captured by the leaves of 15 urban landscape plants were measured in this study using corresponding indices and assessment methods. Models were set up to evaluate the ecological effects of major landscape plants on the air purification. In addition, factors influencing the capacity of dust capture on the surface of the landscape plants were analyzed to provide some scientific information to improve the ecological environmental quality. Results indicated that there were obviously differences on dust removal in different sampling sites. Trees can capture the largest amount of dust, indicating that the trees were the principle plants that adsorbed dust. The ability of capture dust was closely related to leaf surface characteristics such as crease, coarseness, floss, grease and leaves＇ wetness. The amount of dust captured was depending on the total area of leaves, angle of branches and shapes of tree crown etc.