Abstract：
With the insidiously growing impact of urban development on the environment, the issue of air quality has attracted extensive attention nationally and globally. It is of great significance to study the influence of urbanization on air quality for the rational development of cities. MODIS-MAIAC (Moderate Resolution Imaging Spectroradiometer-Multi-Angle Implementation of Atmospheric Correction) Aerosol optical depth (AOD) product, DMSP/OLS (Defense Meteorological Satellite Program/Operational Linescan System) and NPP/VIIRS (Suomi National Polar-orbiting Partnership/Visible Infrared Imaging Radiometer Suite) night-light were used to explore the spatiotemporal variation and correlation between AOD and urbanization development before and after the promulgation of environmental governance policies in Jinan City from 2009 to 2018. Results show that (1) the spatial distribution of AOD in Jinan had the characteristics of high in the north and low in the south, high in the west and low in the east, and low in some parts of the central region; there was a significant seasonal variation in time, with the highest AOD in summer and the lowest in winter. During 2009-2013, the annual average variation of AOD increased by 20.6%, while during 2014-2018, it decreased by 35.3%; (2) The distribution of night-light in Jinan City has progressively expanded, mirroring the city\'s ongoing development. The spatial distribution of aerosols in urban areas was relatively low compared to the surrounding areas of the city. (3) From 2009 to 2013, there existed a significant positive correlation between the spatial and temporal distribution of AOD and night-light. However, from 2014 to 2018, with the implementation of environmental governance policies, this relationship shifted to a significant negative correlation between the spatial and temporal distribution of AOD and night-light. Through an analysis of the correlation between urban development and aerosol depth in Jinan City over the past decade, it can be concluded that urban development does not inevitably result in elevated AOD levels. Notably, the Jinan government has achieved remarkable results in controlling the atmospheric environment, as evidenced by recent years\' improvements.
摘要：
随着城市发展对环境的影响越来越大，空气质量问题引起了全国和全球的广泛关注。研究城市化对空气质量的影响对城市的合理发展具有重要意义。MODIS-MAIAC(中分辨率成像光谱仪-大气校正的多角度实施)气溶胶光学深度(AOD)产品，利用DMSP/OLS（国防气象卫星计划/运营线路扫描系统）和NPP/VIIRS（Suomi国家极地轨道合作伙伴/可见光红外成像辐射计套件）夜光，探讨了2009-2018年济南市环境治理政策颁布前后AOD与城市化发展的时空变化和相关性。结果表明:(1)济南市AOD的空间分布具有北高南低的特点,西高东低,中部地区的一些地区较低；时间上有明显的季节性变化，夏季AOD最高，冬季最低。2009-2013年，AOD的年平均变异量增加了20.6%，2014-2018年下降35.3%；（2）济南市夜灯分布逐步扩大，反映了这座城市的持续发展。与城市周边地区相比，城市地区气溶胶的空间分布相对较低。(3)2009-2013年AOD与夜光的时空分布呈显著正相关。然而,从2014年到2018年，随着环境治理政策的实施，这种关系转变为AOD和夜光的时空分布之间的显着负相关。通过分析济南市近十年来城市发展与气溶胶深度的相关性,可以得出结论，城市发展并不必然导致AOD水平升高。值得注意的是,济南政府在控制大气环境方面取得了显著成效，近年来的进步证明了这一点。
