黄河流域高铁网络时空分异研究

Spatio-Temporal Differentiation of High-Speed Rail Network in the Yellow River Basin

为了探究2010,2015,2020和2023年黄河流域高铁网络结构演化特征,使用Python分别获取各年份黄河流域90个城市间OD高铁运营频次数据,采用社会网络分析方法构建了黄河流域高铁网络,探讨黄河流域高铁网络结构时空分异特征。研究结果表明,黄河流域城市度值逐渐增大,高铁网络节点度值的分布较为均匀;郑州市、西安市的中介中心性排名靠前;平均聚类系数逐年降低,城市枢纽节点城市作用突出;平均路径的减小表明高铁网络的可达性水平不断提升,黄河流域城市之间的网络通达性增强;网络密度逐渐增强,城市节点间紧密程度逐渐加强。

To explore the structural evolution characteristics of high-speed rail network in the Yellow River Basin in 2010,2015,2020 and 2023.Python was used to obtain OD high-speed rail operation frequency data among 90 cities in the Yellow River Basin in each year,and social network analysis method was used to construct high-speed rail network in the Yellow River Basin,and the spatio-temporal differentiation characteristics of high-speed rail network structure in the Yellow River Basin were discussed.The results show that the city degree value of the Yellow River Basin increases gradually,and the distribution of node degree value of the high-speed railway network is more uniform.The centrality of intermediary agencies in Zhengzhou and Xi'an ranks high.The average clustering coefficient decreases year by year,and the city role of urban hub node is prominent.The decrease of the average path indicates that the accessibility level of the high-speed rail network is continuously improved,and the network accessibility among cities in the Yellow River Basin is enhanced.The density of the network is gradually increased,and the tightness between urban nodes is gradually strengthened.