中国城市土地投入产出效率与城镇化水平的耦合关系——对286个地级及以上城市行政单元的分析

Coupling Analysis of Urban Land Input-output Eff iciency and Urbanization Rate in China

研究目的:分析中国城市土地投入产出效率与城镇化的耦合协调状态,揭示土地投入产出效率与城镇化水平之间的作用机制,为认识城镇化进程中的土地利用特征提供依据。研究方法:采用非参数统计估计的数据包络分析(DEA)方法评价中国城市土地投入产出效率水平,并在此基础上,通过耦合度及耦合协调度指数计算,从时空角度探讨城市土地投入产出效率与城镇化水平间的耦合关系。研究结果:中国城市土地投入产出效率与城镇化率间的耦合关系相对较低,且空间角度存在东中西梯度递减与城市规模递增的分布特征。研究结论:土地投入产出效率与城镇化水平耦合度变动的驱动因素在不同时期并不相同,相同因子在不同时期的作用方向也可能发生变化,二者的耦合作用存在"U"型曲线的阶段性变化规律。

The purpose of this paper is to analyze the coupling coordination degree of urban land input-output efficiency and urbanization rate, and serve as a theoretical basis for constructing benign interactive mechanism between land-use- efficiency and urbanization. A non-parameter method is applied with the input-output efficiency of urban land in China. And based on this, the coupling relation of land input-output efficiency and urbanization rate is discussed by counting coupling degree index. The results show that the coupling degree is low. The grades from east to west are in an increasing coordination relation to the city scales. The paper concludes that on spatial perspective, the coordination diminishes from east to west and increases by city scale. On temporal perspective, the driving factors are different in different periods, and there is stage-changing tendency law on interaction between urban land-use-efficiency and urbanization.