生态环境学报Issue(5)：806-811,6.
北京市区域城市化程度与颗粒物污染的相关性分析
Correlation analysis between urbanization and particle pollution in Beijing
摘要
Abstract
Urbanization causes serious resources and environment problems especially air pollution which severely affects human health. Atmospheric particulate matters such as PM2.5 are becoming to be the major atmospheric pollutant in large cities. The urbanization effect on the concentration of air particles is often stated in large scale regions but has rarely been studied in smalldistrict in detail. By analyzing the correlation between the concentrations of size-fractionated particles and varying degrees of urbanized areas, we studied the impact of urbanization to the concentrations of particulate matters such as PM2.5. Seven typical monitoring points were selected to monitor the concentrations of PM2.5 and PM10 in Beijing during four months continuously, from July to October, 2013. Resident population density, GDP and forest coverage were selected as urbanization indexes fromBeijing Regional Statistical Yearbook. Data analysis method included the change trend analysis, the Pearson correlation analysis and the regression analysis. Due to the dissimilar degrees of urbanization in different regions of Beijing, the particulate matter pollution varies correspondingly. High PM2.5 and PM10 concentrations found to be closely related to each other, PM2.5 was the main component of PM10. The particle concentrations were correlated to GDP and the rate of forest coverage, positively correlated with GDP, and negatively correlated with the rate of forest coverage. The particle concentrations were positively followed the developing trend of population density. The correlation coefficient of PM2.5 and GDP is 0.875, and that of PM2.5 and forest coverage is -0.838. The correlation coefficient of PM10 and GDP is 0.947, and that of PM10 and forest coverage is -0.775. Overall, the particle concentrations increase with the development of the urbanization. While the rapid development of China's urbanization, environmental and economic concerns should be coordinated. Adjusting industrial structures, increasing the green vegetation and controlling pollution sources will help reduce the pollution degree of particulate matters in Beijing and provide appropriate support and protection for China's urbanization process.关键词
PM2.5浓度/PM10浓度/城市化/人口密度/经济/林木覆盖率Key words
PM2.5/PM10/urbanization/population/GDP/forest coverage分类
资源环境引用本文复制引用
莫莉,余新晓,赵阳,孙丰宾,莫楠,夏洪磊..北京市区域城市化程度与颗粒物污染的相关性分析[J].生态环境学报,2014,(5):806-811,6.基金项目
国家林业公益性行业科研专项 （）
