基于聚类分析的北京市空气质量时空分布研究

对北京市空气质量时空分布的研究已比较丰富,但仍缺少对北京市不同区域大气污染物变化相似性的研究。在分析北京市2018年空气污染物时空分布特征的基础上,得出污染物浓度在空间上呈现出北低南高的趋势,自然因素是造成该趋势的主要原因。分别从污染物浓度值和空气质量等级天数2个角度对北京市的大气监测站点进行聚类分析,根据2种聚类结果进行了交叉类分析,并对北京市空气质量的治理提出相应的建议。

Researches on spatial and temporal distribution of Beijing air quality is relatively rich,but few cover the similarity of air pollutants in Beijing different regions.Based on the analysis of the spatial and temporal distribution of Beijing air pollutants in 2018,a trend of low in the north and high in the south is concluded.The natural environment is the main reasons for this trend.This paper also segments Beijing atmospheric monitoring stations in terms of pollutant concentration value and air quality grade days respectively,and makes cross cluster analysis according to the two clustering results.By summarizing the results,this paper also puts forward corresponding suggestions on Beijing air quality control.