Interaction Characteristics and Attribution Analysis of PM2.5 in Beijing-Tianjin-Hebei-Shanxi-Shandong-Henan Regions from the Perspective of Complex Network
To realize effective monitoring of air quality,this research studied the interaction of PM2.5 from the per-spective of complex network.Based on the traditional complex network,the research used Granger causality test to deter-mine the influence relationship of PM2.5 among cities in Beijing-Tianjin-Hebei-Shanxi-Shandong-Henan regions,and in-troduce the theory of trophic coherence in biology to explore the hierarchical characteristics of PM2.5 network.From the perspectives of both economic and social factors and meteorological factors,the research conducted the attribution analy-sis of the characteristics on the complex network of PM2.5 in Beijing-Tianjin-Hebei-Shanxi-Shandong-Henan regions.The results show that PM2.5 in Beijing-Tianjin-Hebei-Shanxi-Shandong-Henan regions has significant spatial network charac-teristics,and the regional interaction and transmission relationship are complex,while the stability of PM2.5 network va-ries by season.Compared with nodes with high betweenness centrality,the efficiency of urban network in spring and au-tumn is more sensitive to nodes with high degree centrality,while in winter,the degree of sensitivity to both is similar.The concentrations of PM2.5 in Beijing,Zhengzhou,Jinan and Taiyuan are correlated with economic and social factors to varying degrees,and there are long-range positive correlations of varying strengths with meteorological factors.
PM2.5interaction relationshipcausality testdirected network characteristicsattribution anal-ysisBeijing-Tianjin-Hebei-Shanxi-Shandong-Henan regions
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