Based on the automatic monitoring data of ambient air in Rongchang District of Chongqing from 2018 to 2023,fuzzy comprehensive evaluation method,air quality comprehensive index method and air quality index method were used to evaluate the air quality in Rongchang District,and the annual change trend was analyzed by Spearman rank correlation coefficient method to comprehensively understand the change law of air quality in Rongchang District and identify key pollution factors.To provide theoretical basis for improving air quality in Rongchang District.The results showed that the evaluation results of the three methods were basically consistent:the air quality in Rongchang District improved gradually from 2018 to 2023,and the effect was obvious;PM2.5 and O3 are the main pollutants affecting air quality in Rongchang District,and O3 is gradually obvious,so it is necessary to strengthen the collaborative control of PM2.5 and O3;the impact on air quality,O3 significantly increased,PM10 showed an upward trend,PM2.5 showed a downward trend.
关键词
空气质量/模糊综合评价法/空气质量综合指数法/空气质量指数法/变化趋势
Key words
air quality/fuzzy comprehensive evaluation method/air quality comprehensive index method/air quality index method/changing trend
万方数据