【摘要】 文章利用2015—2017年全国20个城市群的空气质量数据,分别从多个时间尺度比较总结了城市群空气质量的时空演化特征,对不同发展阶段城市群空气质量影响因素进行了量化分析并总结了社会经济驱动规律。研究表明:(1)2015—2017年,全国城市群空气质量指数波动上升;空气质量呈季节性变化;空气质量达标天数平均比例降低;空气质量指数空间上呈"北高南低"格局,且城市群内部空气质量趋于均衡;空气质量指数分布形态较为稳定,且不同类型城市群空气质量指数差距缩小;(2)人口集聚、人口城市化、土地城市化、能源消耗和技术进步对整体城市群空气质量变化具有显著影响,但各影响因素对不同发展阶段城市群的空气质量的影响方向和影响强度存在差异。更多还原

【Abstract】 Based on the air quality data of 20 urban agglomerations in China from 2015 to 2017, this paper summarized the spatial and temporal evolution characteristics of air quality in urban agglomerations from different time scales, analyzed the influencing factors of air quality changes of urban agglomerations in different development stages and summarized the law of social driving. The results show that:(1) From 2015 to 2017, the AQI of urban agglomerations in China was fluctuating upward; the air quality of urban agglomerations changed seasonally; the average proportion of air quality standard days in urban agglomerations decreased; the spatial pattern of AQI of urban agglomerations showed "high in the north and low in the south", and the air quality of cities within urban agglomerations tended to be balanced; the AQI distribution pattern of urban agglomerations was relatively stable, and the gap between AQI of different types of urban agglomerations was narrowed;(2) Population agglomeration, population urbanization, land urbanization, energy consumption and technological progress had significant effects on air quality changes in overall urban agglomerations, but the influence direction and intensity of each factor on air quality changes in urban agglomerations at different stages of development were different.更多还原