城市边缘区空间绩效的微观分异与区位影响研究

Research on the micro-level variation and location effects of spatial performance in urban fringe

区位禀赋不足导致的城市边缘区空间绩效低下是制约城市高质量发展的重要因素。构建城市边缘区空间绩效与区位因子的格网化计量模型,通过多尺度地理加权回归方法识别交通、政务和生态三类区位因子对空间绩效的影响,并以天津环城四区为例开展实证研究。研究发现,天津城市边缘区空间绩效分布呈现“圈层+多峰”的结构,同时具有突变与过渡双重特征,具体表现为近郊突变性强、远郊过渡性强。城郊产业园区的经济产出不足和乡村地区公共服务供给滞后是天津城市边缘区形成低绩效空间的主要原因。交通区位对天津城市边缘区的空间绩效正向影响最强,政务区位的影响次之,生态区位则表现出较弱的负向作用。研究结论可为城市边缘区的空间规划实践提供依据。

The low spatial performance of urban fringe caused by insufficient locational endowments has become a major limiting factor in the high-quality development of cities in the transition period.This article constructs a grid-based econometric model of spatial performance and locational conditions in urban fringe,identifies the impact of transportation,government affairs,and ecological locational factors on spatial performance through multi-scale geographically weighted regression,and conducts empirical research in four districts around Tianjin.The study found that:the spatial performance distribution of Tianjin urban fringe presents a“ring&multi-peak”distribution structure,with both discontinuous and transitional attributes,showing strong discontinuity in the near suburbs and strong transitional characteristics in the far suburbs;the insufficient economic output of suburban industrial parks and the lagging public service supply in rural areas are the main causes of low performance in Tianjin urban fringe;transportation locational factors have the strongest positive impact on the spatial performance of Tianjin urban fringe,followed by government affairs,while ecological locational factors exhibit a weak negative effect.The spatial heterogeneity influenced by location factors is highly significant,so it is necessary to formulate and optimize policies based on local conditions.