城市绿地的滞尘效应及评价方法

对河南省郑州市不同绿化植物的滞尘量进行了测定，通过建立相关模型研究了郑州市绿地系统净化大气的效应，并采用相关指标和评价分级方法，将植物的滞尘能力划分为5级。郑州市城市绿化植物对空气滞尘总量为9846．38t，其中乔木树种占滞尘总量的87．0％，灌木占11．3％草坪占1．7％，说明对空气中灰尘的净化植物主要是乔木。

The Effect of Greenland on Absorbed Dust and Its Assessment Method

Based on the surveys of the absorbed dust of plants in Zhengzhou city, the effects of pure air pollution of plant were estimated by means of creating models. The green plants were classified into 5 levels by using assessment and relative factors. The green plants can absorbed dust about 9 846.38 t in Zhengzhou city, among them the amount of absorbed dust by trees accounted to 87.0%, shrubs 11.3%, lawns 1.7%. It is obvious that trees are the main contributors on the purification of air dust.