北京市大气污染物时空变化特征
Temporal and Spatial Characteristics of Air Pollutants in Beijing
DOI: 10.12677/AG.2018.83071, PDF,  被引量    国家自然科学基金支持
作者: 路玲, 张爱武, 康孝岩:首都师范大学三维信息获取与应用教育部重点实验室,北京
关键词: 北京市大气污染物时间变化空间分布相关性Beijing Air Pollutants Time Variations Spatial Distribution Relativity
摘要: 使用2016年北京市环境监测中心发布的大气污染物数据,运用数理统计和GIS空间分析的方法,分析了2016年北京市PM2.5、PM10、NO2、SO2、CO、O3的时空变化特征,同时利用Spearman相关分析法探讨了此6种污染物之间的相关性。结果表明:2016年月变化趋势中,PM10和PM2.5变化曲线相似呈双峰分布,NO2、SO2变化曲线相似呈波浪型分布,CO呈三峰分布,O3呈单峰分布;季节变化中,PM2.5、NO2、CO秋冬污染高于春夏,PM10春秋污染高于冬夏,SO2春冬高于夏秋,O3则春夏高于秋冬。空间分布上PM2.5、PM10、SO2、CO均表现出由南向北逐渐降低的变化趋势,NO2城区污染高于郊区,O3北部污染高于南部。相关性分析结果显示PM2.5、PM10、NO2、SO2、CO之间呈现出显著的正相关性,O3则与其他污染物呈现出负相关性。
Abstract: The temporal variation and spatial distribution of PM2.5, PM10, NO2, SO2, CO, O3 released by Beijing Municipal Environmental Monitoring Center of Beijing in 2016 were discussed by means of ma-thematical statistics and spatial analysis. Spearman correlation analysis was used to explore the correlation between these six pollutants. The results showed that in monthly average of 2016, PM10, PM2.5 showed bimodal curves, NO2, SO2 showed wavy-shaped curve, CO showed a three-peak curve and O3 showed a single-peak curve. During seasonal variation, the average concentrations of PM2.5, NO2, SO2 and CO were the highest in winter, and PM10 was the highest in spring. The average concentrations of these 5 pollutants were the lowest in summer, while O3 was the opposite. In spa-tial distribution of 2016, the concentrations of PM2.5, PM10, SO2 and CO in the south were higher than the north, the concentration of NO2 in urban was higher than the suburb, while the concentration of O3 in the north was higher than the south. Correlation analysis result displayed there was a significant positive correlation between PM2.5, PM10, NO2, SO2 and CO, while O3 showed a negative correlation with other pollutants.
文章引用:路玲, 张爱武, 康孝岩. 北京市大气污染物时空变化特征[J]. 地球科学前沿, 2018, 8(3): 673-682. https://doi.org/10.12677/AG.2018.83071

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