环境监测优化布点的投影寻踪回归分析法

OPTIMIZATION OF ENVIRONMENTAL MONITORING SITES BASED ON PROJECTION PURSUIT REGRE SSION ANALYSIS

应用投影寻踪回归（ＰＰＲ） 建模技术，分析环境测点的污染物监测数据之间的关系。通过建模过程中的数据生成，获得各测点的数据对环境质量总体状况的权重贡献率。根据权重贡献大小，进行环境测点的优选。用ＰＰＲ 分析法从成都市３ 项大气污染物的１２ 个环境测点中，优选出５ 个测点，其保留信息量约占全部测点信息量的９０ ％ 。

With the help of projection pursuit regression technique, relation among the monitoring data of pollutants in environmental monitoring sites was analysized. Weight contribution rates of data in monitoring sites with relation to general state of environmental pollution were calculated by the generating data in the process of modeling. Optimization of environmental monitoring sites was performed based on the magnitude of weight contribution rates. With the help of the projection pursuit regression analysis, 5 optimal monitoring sites were selected out of 12 monitoring sites polluted by 3 items of atmospheric pollutants in Chengdu Urban, the effective information content of which is 90% of total information content in 12 monitoring sites.