文献类型： 会议论文

第一作者： Wangwang Gao

作者： Wangwang Gao ¹ ; Linyan Bai ¹ ; Jianzhong Feng ² ; Dan Cao ¹ ; Mengrui Cui ¹ ; Ziwei Li ¹ ; Chenyang Duan ¹ ;

作者机构： 1.Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China

2.Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing, China

关键词： Land Use and Land Cover Changes (LUCC);Urbanization;Air Quality;Fine Particulate Matter (PM_(2.5));Districtlevel;India

会议名称： ISPRS Workshop on Remote Sensing and Synergic Analysis on Atmospheric Environment

主办单位：

页码： 37-42

摘要： Land use and land cover changes (LUCC) affects the atmospheric environment directly or indirectly. Therefore, understanding the atmospheric response to LUCC is of great significance to maintain and improve the ecological environment. In this study, based on fine particulate matter (PM_(2.5)) and LC products, we first compared the differences of PM_(2.5) between urban and surrounding areas, and then further investigated the variations of PM_(2.5) in different and land cover (LC) using Mann-Kendall (MK) test and Sen's trend analysis approach at the district-level in India during 1998-2015. The results showed that the numbers of districts where the differences of PM_(2.5) (D_(PM_(2.5))) between urban and the surrounding areas were greater than zero were increasing during 1998-2015. There is an upward trendency of annual mean PM_(2.5). The annual mean PM_(2.5) was higher than 40μg/m~3 in 58% of India's areas where there were mainly located in the Ganges plains of northern India with cropland (L01) and urban areas (L07). The annual mean PM_(2.5) was less than 10μg/m~3 were mainly found in north-western India with permanent ice and snow (L10), accounting for 10% of India's area. There are significant positive trends of PM_(2.5) concentration in 90% of cropland (L01) and 88% of urban area (L07) and the average slope were 0.83μg/m~3 and 0.82μg/m~3 respectively, which were higher than those in the rest of LC. This research serves as the basis of reference for the equitable allocation of land resources and restructuring of land use and land cover patterns in urban areas of India that severely affected by air pollution.

分类号： TP7-53