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Temporal-spatial Distribution Characteristics of Air Pollutants in Chengdu Economic Region, China

机译：中国成都市经济区空气污染物的时空分布特征

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The previous characteristics researches of air pollution were almost based on data from national environmental monitoring stations in 2015. The temporal variation curves of air pollutants and the ArcGIS grid interpolation method were used to analyze the spatial-temporal variation of air pollutants in five cities of Chengdu economic region. In 2015, the monthly change trends of PM_(2.5), PM_(10), CO, NO~(2)and NO of air pollutants in Chengdu economic region were basically the same. The maximum monthly average concentration was in January or December, and the minimum was in May to September. The temporal variation of SO~(2)was characterized by little fluctuation of monthly concentration. The temporal variation characteristics of O_(3)were opposite to other pollutants. The spatial distribution of PM_(10)and PM_(2.5)was characterized by the largest concentration in Chengdu and the southwest of Meishan, in which they were mainly concentrated in the central area of Chengdu in winter. The average concentration of CO in Chengdu was the largest, followed by Deyang and Mianyang, and Meishan and Ziyang was the smallest. The concentrations of NO~(2)and NO in Chengdu were the largest, while those in Ziyang were the smallest. The spatial distribution characteristics of O_(3)were different from other pollutants. The areas with the largest concentration of O_(3)were Ziyang and a small part of west in Chengdu. The spatial distribution of SO~(2)was characterized by the largest concentration of SO~(2)in Ziyang, the lowest concentration in Mianyang and Deyang.
机译：以往的空气污染特征研究几乎都是基于2015年国家环境监测站的数据。利用空气污染物的时变曲线和ArcGIS网格插值方法对成都市五个城市的空气污染物的时空变化进行了分析。经济区域。 2015年，成都经济区空气污染物PM_（2.5），PM_（10），CO，NO〜（2）和NO的月变化趋势基本相同。最高的月平均浓度在1月或12月，最低的是5月至9月。 SO〜（2）的时间变化特征是月浓度变化很小。 O_（3）的时间变化特征与其他污染物相反。 PM_（10）和PM_（2.5）的空间分布特征是在成都和眉山西南部集中最大，冬季主要集中在成都的中部地区。成都的一氧化碳平均浓度最大，其次是德阳和绵阳，眉山和紫阳最小。成都的NO〜（2）和NO浓度最大，而资阳的最小。 O_（3）的空间分布特征不同于其他污染物。 O_（3）浓度最高的地区是资阳，在成都以西则是一小部分。 SO〜（2）的空间分布特征是资阳的SO〜（2）浓度最高，绵阳和德阳的SO〜（2）浓度最低。

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