武汉市中心城区道路中心性对人口活力的影响研究

Study on the Influence of Road Centrality on Population Vitality in Central District of Wuhan

探究道路对人群活动的影响有助于从道路视角来提升城市活力。本文基于城市网络分析(UNA)和地理加权回归(GWR),采用控制变量法对武汉市中心城区道路中心性对人口活力的影响进行分析,研究表明:第一,不同出行模式对道路中心性特征感知不同。骑行模式和驾车模式下的道路中心性揭示了更为局部的中心性特征。全域道路中心性揭示了整个研究区的道路中心性特征。第二,加入道路中心性变量后的GWR模型结果显示,邻近中心性和直线中心性对人口活力存在显著的正向影响,中介中心性对人口活力存在显著负向影响。第三,研究区边缘人口活力的提升对道路邻近中心性和直线中心性带来的交通便捷性有着更强的依赖性。

Exploring the influence of roads on crowd activities is helpful to improve the population vitality of cities. Based on urban network analysis(UNA) and geographically weighted regression(GWR), this paper analyzes the influence of road network centrality on population vitality in Wuhan city center by using control variable method. The results show that : First, different travel patterns have different perception of road centrality characteristics. The centrality of road network under cycling mode and driving mode reveals more local centrality characteristics. The centrality of global road network reveals the characteristics of road centrality in the whole research area. Second, The GWR model with road centrality included showed that adjacent centrality and linear centrality had a significant positive effect on population vitality, while intermediate centrality had a significant negative effect on population vitality.Third, The improvement of population vitality at the edge of the study area has a stronger dependence on the traffic convenience brought by road proximity centrality and linear centrality.