城市多中心结构对土地利用效率的影响

Effect of Polycentric Structure of Cities on Land Use Efficiency

研究目的:探究城市多中心空间结构发展对土地利用效率的影响,从优化城市空间格局视角下,为促进土地资源高效利用提供理论支撑和路径参考。研究方法:非期望产出超效率SBM模型,固定效应模型,调节效应模型。研究结果:(1)城市多中心结构对土地利用效率的影响具有先抑制、后促进的“U”型特征,该效应是通过多中心结构对城市技术创新水平和要素配置效率的非线性影响实现的;(2)在不同区位、不同时期以及不同城市之间,城市多中心结构对土地利用效率的影响存在异质性;(3)城市规模在多中心结构影响土地利用效率的过程中存在正向的调节作用;(4)城市群多中心结构与土地利用效率呈现“U”型关系,而省域多中心结构与土地利用效率表现出正相关关系。研究结论:地方政府要结合城市自身条件,选择合理化空间发展规划,充分发挥技术创新和要素配置的作用,加快促进土地利用效率提升和国土空间体系优化。

The purpose of this paper is to explore the impact of the development of the polycentric structure of cities on land use efficiency,to provide theoretical support and path reference for promoting the efficient use of land resources from the perspective of optimizing the spatial pattern of urbanization.The research methods include the SBM model of non-expected output super-efficiency,fixed effect model and moderating effect model.The results show that:1)the influence of the polycentric structure of cities on land use efficiency is U-shaped,which is firstly inhibited and then promoted,and this effect is realized through the nonlinear influence of the polycentric structure of cities on urban technological innovation level and the allocative efficiency of production factor.2)In different locations,different periods and different cities,the influence of polycentric structure of cities on land use efficiency is heterogeneous.3)Urban size has a positive moderating effect on the relationship between polycentric structure of cities and land use efficiency.4)There is a U-shaped relationship between polycentric structure of cities and land use efficiency in urban agglomerations,while there is a positive correlation in provinces.In general,local governments should choose their own spatial development plans,leverage the important role of technological innovation and resource allocation,and accelerate the improvement in land use efficiency and the optimization of territorial space system.