基于主成分分析法的京津冀空气质量研究

Study on the Air Quality of Beijing,Tianjin and Hebei based on Principal Component Analysis

针对京津冀空气质量问题,利用SPSS软件,建立主成分分析的数学模型,提取主成分,得出影响京津冀空气质量水平的三大污染物是NO_2,SO_2,PM2.5.高斯点源模型计算出每小时分散在相同空间位置的污染物的浓度和,得出该点上的污染物浓度;多污染源扩散模型利用坐标变换的方法和GIS技术,模拟污染物扩散,实验结果表明,污染物减少的浓度越大,污染梯度变化越大.

In this paper,based on the air quality of Beijing,Tianjin and air quality problem,the paper establishes a mathematical model of principal component analysis,extracts the main components,and concludes that the three major pollutants are PM2.5,SO2 and NO2,and the Gauss point source model is established,which is based on the point source model.