| 摘要: |
| 针对近年来空气质量问题，利用重庆市2013-12到2017-12的空气质量资料，提出采用Ridit分析法与描述性统计相结合的方法对重庆市空气质量的变化趋势进行特征分析。结果表明：近4年来，重庆市的空气质量有逐渐变好的趋势。其中，从月份变化的角度来看，空气质量以12个月为一个周期发生变化且有逐渐变好的趋势；从季节变化的角度来看，重庆市的空气质量存在比较明显的季节性差异，其中夏季的空气质量是全年中最好的，其次是秋季与春季，冬季的空气质量最差；从年度变化的角度来看，空气质量有逐年变好的趋势。 |
| 关键词: 空气质量 Ridit方法 特征分析 |
| DOI： |
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| 基金项目: |
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| Character Analysis of Air Quality in Chongqing |
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ZOU Ling，YANG Yi ping
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| Abstract: |
| In view of air quality problems in recent years， the air quality data of Chongqing from December 2013 to December 2017 were analyzed by Ridit and descriptive statistics. The trend of air quality in Chongqing was analyzed. It shows that in the last four years， the air quality in Chongqing has gradually become better. From the monthly variation trend in Chongqing City， the air quality in 12 months for a period of change has gradually become a good trend；from the seasonal change trend，there is seasonal differences in Chongqing Citys air quality， the air quality in summer is the best， followed by the autumn，winter and spring，in winter， the air quality is the worst； from the annual change trend， the air quality in Chongqing has a tendency to be better year by year. |
| Key words: air quality Ridit method feature analysis |
