大气污染分区与绿化模式的研究

Classification of Atmospheric Pollution Areas and Afforestation Models

在大气污染物实测和预测分析的基础上，应用聚类分析和综合指数的方法将污染区分为４个类型，绿化植物按照指数大小划分为３类。根据每个类型污染特点选择相应的绿化模式和植物种。研究表明：距污染源下风向３００—４０００ｍ是重污染区，单一污染和复合污染在该范围内较严重。绿化模式以乔、灌、草结合的形式对大气污染净化效果较好。

ased on the monitoring and predictive analysis of atmospheric pollutants, the clustering analytic method and synthetic index method were used to classify the POllution areas into four types and to classify the greening vegetations into three types in terms of the size of index value. Then further based on the features of POllution for each type of POllution areas, corresponding afforestation models and plant species were selected to green the areas in order to improve the atmospheric environmental quality there. The study demonstrates that more serious single and comPOunded pollutions generally took place at 300 to 4000m leeward from pollution sources, where an afforestation model consisting of the proper combination of arbor,bush and grass was better in improving the quality of atmospheric environment.