长江中游城市群城市土地利用效率空间溢出效应研究

城市群城市土地利用效率是城市群城市土地要素有效配置、合理利用以及城市经营管理水平的综合体现。在使用DEA方法得到2003～2015年长江中游城市群28个城市土地利用效率并且分析其变化趋势以及空间关联性的基础上，构建SDM模型对长江中游城市群的城市土地利用效率空间溢出效应进行分析。研究结果表明：（1）2003～2015年长江中游城市群城市土地利用效率总体呈波动变化趋势。长江中游城市群城市土地利用效率存在空间负相关关系，城市土地利用效率具有空间异质性；（2）通过构建SDM模型分析表明，外商直接投资额以及人均地区生产总值是长江中游城市群城市土地利用效率的主要驱动因素；（3）长江中游城市群城市土地利用效率的空间溢出效应较弱，在一定程度上反映了长江中游城市群城市之间的空间相互作用较弱，经济联系还不够紧密。因此，长江中游城市群需要进一步构建城市合作机制，提高城市土地利用系统的整体性和联动性，推进区域经济协同发展。

Research on the Spatial Spillover Effects of the Urban Land Use Efficiency for the Urban Agglomeration in the Middle Reaches of the Yangtze River

The land use efficiency of urban agglomeration comprehensively manifests the allocation and utilization of urban land elements as well as urban management.This article analyzed the variation tendency and spatial correlation of the urban land efficiency values of 28 cities in the Urban Agglomeration in the Middle Reaches of Yangtze River from 2003 to 2015,which is obtained by using the data envelopment analysis (DEA) method.Then,the study built spatial Dubin model (SDM) to analyze spatial spillover effects of urban land use efficiency.The results showed that:(1) From 2003 to 2015,the urban land use efficiency in general shows fluctuating trends and spatial heterogeneity;(2) Foreign direct investment and per capital gross regional product are the main drivers of urban land use efficiency;(3) The spatial spillover effect of urban land use efficiency is weak,which to a certain extent,reflects the weak spatial interaction and economic ties between cities.Therefore,the urban agglomeration in the middle reaches of the Yangtze River should build up further urban cooperative mechanism,to improve the integrity and linkage of urban land use system and promote synergetic development of regional economy.