喀斯特山地城市街道活力空间特征与影响因素研究

Research on Spatial Characteristics and Influencing Factors of Street Vitality in Karst Mountain Cities

摘要: 随着城市化的快速发展，居民享受到了更加便利的生活条件，但同时也面临着城市空间品质提升的挑战。本文通过对典型喀斯特山地城市贵阳市深入分析，探讨其主城区街道活力的表现和构成要素，以期提升街道活力。主要结论如下：(1) 从整体来看，POI数量较多的街道交错分布在云岩、南明两区交界处，总体向西北和东南方向纵向延伸，以商业网点密集、交通便利、人流密集的地区为主；街道的多样性指数以云岩区为中心，向外逐渐减小；街道活力也由中心向四周发散，活力等级逐渐降低，按其活力大小排序：云岩区 > 南明区 > 观山湖区 > 花溪区 > 白云区 > 乌当区。(2) 不同POI类型街道的活力等级排序为生活服务类 > 商业类 > 交通类 > 景观休闲类。(3) 在各区活力等级分布中，四类街道的布局在主城六区交界处都出现了间断而成片的峰值，呈“中间混杂聚集、边缘分级扩散”的分布格局，各类产业密集程度高的区域具有显著的空间重叠特征。

Abstract: With the rapid development of urbanisation, residents have enjoyed more convenient living conditions but also face challenges in improving urban space quality. This paper analyses the typical Karst mountain city of Guiyang in depth, exploring the performance and components of street vitality in its main urban area, with the aim of enhancing street vitality. The main conclusions are as follows: (1) Overall, streets with a large number of POIs are interspersed around the junction of Yunyan and Nanming districts, generally extending longitudinally to the northwest and southeast, mainly in areas with dense commercial outlets, convenient transportation, and high foot traffic; the diversity index of streets centres on Yunyan District and gradually decreases outward; street vitality also spreads from the centre outward, with vitality levels gradually decreasing, ranked as follows: Yunyan District > Nanming District > Guanshanhu District > Huaxi District > Baiyun District > Wudang District. (2) The vitality ranking of streets by different POI types is life services > commercial > transportation > scenic and leisure. (3) In the distribution of vitality levels in each district, the layout of the four types of streets shows intermittent yet clustered peaks at the junctions of the six main urban districts, displaying a pattern of “mixed central concentration and graded peripheral diffusion”, with high spatial overlap in areas where various industries are densely concentrated.