行政区划调整与城市空间结构演化——基于撤县设区的视角

Administrative Division Adjustment and Urban Spatial Structure Evolution--A Perspective of County-to-District Reform

在新型城镇化建设对城市紧凑集约发展提出更高要求的背景下,探讨行政区划调整对城市空间结构的影响具有重要意义。基于2000—2016年全国范围内演进的撤县设区数据,深入考察了撤县设区带来的城市空间结构演化效应的研究发现:(1)撤县设区促使了城市空间形态松散化和内部低密度发展,该结论在考虑多种指标、方法以及政策滞后效应之后仍成立。(2)撤县设区政策对东部城市的空间结构松散化影响更强,且不利于其发挥中心集聚优势;相比于建设规制较弱的城市,规制较强的城市受到撤县设区对城市空间结构分散化的影响更为显著。(3)进一步研究表明,自主选择型撤县设区对城市空间结构分散化的影响更加明显,而顺应融入型撤县设区则会在一定程度上促进城市空间结构趋于紧凑化。

In the context of new urbanization,which emphasizes the need for more compact and intensive urban development,understanding the impact of administrative division adjustment on urban spatial structure is of paramount importance.This paper investigates the effects of county-todistrict reform on the evolution of urban spatial structure,drawing on data from the nationwide implementation of this reform between 2000 and 2016.The study yields several key findings:(1)County-to-district reform has led to a more dispersed urban form and low-density internal development.This conclusion remains robust even after accounting for various indicators,methodologies,and policy lag effects.(2)The impact of county-to-district reform on spatial decentralization is more pronounced in eastern cities,hindering their ability to leverage the benefits of central agglomeration.Furthermore,cities with stricter construction regulations experience significantly greater decentralization of urban spatial structure due to county-to-district reform compared to those with more lenient regulations.(3)Additional analysis reveals that the effects of county-to-district reform on urban spatial structure.Active-type reforms show a stronger tendency towards spatial decentralization,while integration-oriented reforms tend to promote the compactness of urban spatial structure.These findings provide valuable insights into the complex interplay between administrative division adjustments and the evolution of urban spatial structure,offering important implications for urban development policies.