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Understanding the Influence of Crop Residue Burning on PM2.5 and PM10 Concentrations in China from 2013 to 2017 Using MODIS Data

文献类型： 外文期刊

作者： Zhuang, Yan 1 ; Chen, Danlu 1 ; Li, Ruiyuan 1 ; Chen, Ziyue 1 ; Cai, Jun 3 ; He, Bin 1 ; Gao, Bingbo 4 ; Cheng, Nianliang 5 ;

作者机构： 1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 Xinjiekouwai St, Beijing 100875, Peoples R China

2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China

3.Tsinghua Univ, Dept Earth Syst Sci, Beijing 100084, Peoples R China

4.Natl Engn Res Ctr Informat Technol Agr, 11 Shuguang Huayuan Middle Rd, Beijing 100097, Peoples R China

5.Beijing Normal Univ, Coll Water Sci, 19 Xinjiekouwai St, Beijing 100875, Peoples R China

6.Beijing Normal Univ, Dept Phys, 19 Xinjiekouwai St, Beijing 100875, Peoples R China

关键词： PM concentrations; crop residue burning; correlation analysis; interannual and seasonal variations; China

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：3.39； 五年影响因子：3.789 ）

ISSN：

年卷期： 2018 年 15 卷 7 期

页码：

收录情况： SCI

摘要： In recent years, particulate matter (PM) pollution has increasingly affected public life and health. Therefore, crop residue burning, as a significant source of PM pollution in China, should be effectively controlled. This study attempts to understand variations and characteristics of PM10 and PM2.5 concentrations and discuss correlations between the variation of PM concentrations and crop residue burning using ground observation and Moderate Resolution Imaging Spectroradiometer (MODIS) data. The results revealed that the overall PM concentration in China from 2013 to 2017 was in a downward tendency with regional variations. Correlation analysis demonstrated that the PM10 concentration was more closely related to crop residue burning than the PM2.5 concentration. From a spatial perspective, the strongest correlation between PM concentration and crop residue burning existed in Northeast China (NEC). From a temporal perspective, the strongest correlation usually appeared in autumn for most regions. The total amount of crop residue burning spots in autumn was relatively large, and NEC was the region with the most intense crop residue burning in China. We compared the correlation between PM concentrations and crop residue burning at inter-annual and seasonal scales, and during burning-concentrated periods. We found that correlations between PM concentrations and crop residue burning increased significantly with the narrowing temporal scales and was the strongest during burning-concentrated periods, indicating that intense crop residue burning leads to instant deterioration of PM concentrations. The methodology and findings from this study provide meaningful reference for better understanding the influence of crop residue burning on PM pollution across China.

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