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对福州市2013年4月-2016年3月空气质量指数AQI(Air Quality Index)数据进行小时变化、逐日变化、逐月变化、季节变化、空间分布及其影响因素分析,探讨引起AQI时间变化及空间分布差异的原因,找出最重要的影响因子。结果表明,福州市AQI在夜间较低,白天由于人类最活动增强,AQI增大;四季中春、冬季AQI较高,夏秋季节次之;通过对首要污染物进行统计分析得到,NO2、PM2.5、PM10、O3对AQI的贡献大,空气质量达到优的天数表现为秋季>夏季>冬季>春季;福州市内各监测点中快安始终作为空气质量较为不好的监测点,而杨桥西路在四季中多表现为AQI较低,空气质量较好。
The change of hourly, daily, monthly, seasonal, spatial distribution and influencing factors of air quality index (AQI) in April 2013 to March 2016 in Fuzhou City were analyzed to explore the changes of AQI Spatial distribution of the reasons for differences, identify the most important impact factor. The results showed that the AQI in Fuzhou was lower at night and the AQI increased due to the enhancement of human activities during the daytime. The AQI was higher in mid-spring and winter and second in summer and autumn in the four seasons. NO2 and PM2 were obtained through statistical analysis of the primary pollutants. 5, PM10, O3 contribution to the AQI, the air quality to achieve the best number of days for the performance of autumn> summer> winter> spring; Fuzhou monitoring points in the fast and always as a poor air quality monitoring point, and Yang Bridge West Road in the four seasons more performance AQI lower, better air quality.