园林植被规划对空气污染控制的作用建模研究

Modeling Analysis of Effect on Garden Vegetation Planning on Air Pollution Control

居民的健康直接受空气污染程度的影响,控制空气污染的重要因素之一是植被,因此提出园林植被规划对空气污染控制的作用建模分析方法。建立数字高程模型和污染物扩散模型,在此基础上研究园林植被规划对空气污染的控制作用。研究结果表明,针对交通排放的污染物浓度,园林植被的控制效果并不明显,园林植物主要是在空间中对污染物进行隔离,通过大气扩散稀释作用降低空气中污染物的质量浓度,且植被叶面指数年内变化与空气污染浓度之间存在时间不同步性。

The health of residents is directly affected by the degree of air pollution.Vegetation is one of the important factors to control air pollution.Therefore,a modeling and analysis method of garden vegetation planning on air pollution control is proposed.Based on the digital elevation model and pollutant diffusion model,the control effect of garden vegetation planning on air pollution is studied.The results show that the control effect of garden vegetation is not obvious for the pollutant concentration of traffic emission.Garden plants mainly isolate the pollutants in space and reduce the mass concentration of pollutants in the air through atmospheric diffusion dilution,and there is a time synchronization between the annual change of vegetation leaf index and air pollution concentration.