基于AQI和小波分析的成都市空气质量评价研究

通过环境监测站收集成都市各个区的空气质量数据,初步了解成都市空气质量现状。从时间和空间两个角度深入剖析成都市各个区的空气质量分布趋势,并对各个区的污染天数进行对比研究。结果表明:外围行政区空气污染较轻,城内行政区污染较重;不同季节,空气质量较差的行政区基本相同,且AQI值波动性不明显,一年四季中AQI值按冬春夏秋的顺序排列。对成都市近两年来AQI进行小波分析,发现空气质量缓慢改善,但总体状况仍不容乐观。区域污染天数结果显示,郫县、温江、青白江区等区污染天数最多。

Evaluation of Air Quality in Chengdu City Based on AQI and Wavelet Analysis

The air quality data of Chengdu City were collected by the environmental monitoring station, and the current situation of air quality in Chengdu City was preliminarily understood. From two angles of time and space, the air quality distribution in each area of Chengdu City was analyzed, and the pollution days in each area were compared and studied. The results showed that the air pollution in the peripheral administration area was relatively light, and the pollution in the city administrative area was more serious; in different seasons, the administrative areas of poor air quality were basically the same, and the lfuctuation of AQI value was not obvious, the AQI value in four seasons was arranged by the order of winter > spring > summer > autumn. By the wavelet analysis of AQI in Chengdu city in the last two years, found that the air quality was slow to improve, but the overall situation was still not optimistic. The results of regional pollution days showed that Pixian, Wenjiang, Qingbaijiang were the districts that had the largest number of pollution days.