The Effect of Greenland on Absorbed Dust and Its Assessment Method
Zhao Yong Li Shuren Yan Zhiping (Henan Agricultural University,Zhengzhou 450002,China)
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.