万寿西宫子站周边空气质量影响因素的灰色关联分析

根据灰色系统理论，编制了灰色关联分析软件，分析了2003—2004年18个月北京市全部24个大气自动监测站所获得的月平均空气污染指数，考察了万寿西宫子站与其它子站周边空气质量的相互依赖性和相互影响。结果表明：天坛子站与东四子站与万寿西宫子站的时间序列关联度最大，表明城四区的空气质量存在同步特征。同时灰色关联分析结果与古城周边存在的工业污染源影响城四区空气质量的事实也是一致的。

Grey Correlation Analysis on Affecting Factors of the Ambient Air Quality around Wanshouxigong Monitoring Station

Based on grey system theory,a grey correlation analysis software was compiled. The time series sequences of month-average API at the period of 18 months from 2003 to 2004 derived from all 24 ambient air quality automated monitoring station in Beijing were analyzed. The dependability and correlation between Wanshouxigong monitoring station and other stations were investigated. The results showed that: the time series sequence correlation indices of Tiantan and Dongsi are rank at the top two stations, which means the air quality of four central urban districts have the synchronism character. And the result of this study is in accordance with the fact that the industrial pollution sources near Gucheng station have significant effects on the air quality of central urban districts.