中文摘要：

针对气溶胶光学厚度（Aerosol Optical Depth,AOD）与PM2.5质量浓度关系在广域地理空间的时空非平稳性,利用中国大陆地区NASA MODIS 2013年AOD产品和945个空气污染监测站点PM2.5浓度数据,按气候、海拔地形和社会经济分区,在年均和季节尺度探究AOD与PM2.5浓度的时空关联特征;实证分析全局和局地AOD-PM2.5关联模式对区域PM2.5浓度制图精度的影响。结果表明：全国范围内的AOD与PM2.5具有时空关联性,但存在明显的地理学分异特点;气候分区中除中温带外,其他气候带均表现出强相关性;各海拔地形区AOD与PM2.5总体上相关性较强,但海拔低于1 000m的地形区冬季相关性差;社会经济发展模式不同,而气候、海拔地形条件相似的各城市群AOD与PM2.5的相关性同样呈现明显差异。研究结果对于揭示我国PM2.5成因机制,指导开展基于AOD的全国或地区尺度PM2.5浓度遥感制图具有重要意义。

英文摘要：

In view of the temporal and spatial non-stationarity of Aerosol Optical Depth （AOD） relationship between PM2.5 concentrations in wide area geographical space,using NASA MODIS 2013 AOD products and 945 concentrations of PM2.5, data of air pollution monitoring sites in China, and according to the climate zone, elevation terrain, and socio-eeonomic partitions, to explore the temporal and spatial characteristics of relationship between AOD and PM2.5 concentrations at the annual and seasonal scales in mainland China,and to analyze the global and local AOD-PM2.5 pattern effects on PM2.5 regional mapping accuracy. The results showed that：1） In the climate partition, part from the mid temperate zone, other climate zones have shown a strong correlation of AOD and PM2.5. 2） In the elevation terrain partition, each partition has a good correlation between AOD and PM2.5 .but the partition at an altitude of less than 1 000 m has a poor correlation of AOD and PM2.5 in the winter. 3） Different social and economic development mode with similar climate, altitude, and terrain conditions of the urban agglomeration is still showing significant differences in the relationship between AOD and PM2.5. The results reveal the temporal-spatial variation law of correlation between AOD and PM2.5 in China which is of important guiding significance for national or regional scale remote sensing mapping based on AOD products.