Spatio-Temporal Coupling Research on Urban Efficiency and Urban Development Degree in Northeast China
利用DEA模型和耦合度模型，分析了2003-2012年东北37个地级市的城市效率、发展程度及其耦合关系的时空演变，发现城市扩张未显著提升效率，且两者呈负相关。
In this paper, by using DEA model, urban development degree index model and the coupling degree model to estimate urban efficiency, urban development degree and coupling degree of 37 prefecture- level cities between years2003 to 2012. Analyzing the temporal and spatial evolution and exploring the relationship characteristics of urban efficiency, urban development degree and the degree of coupling between the two. The results showed that: 1)The coupling degrees of urban efficiencies and urban development degrees are not so high, and there is no significant improvement of the urban efficiency promoted by urban expansion. There is a significant diversity characteristics of the urban efficiency between the different function cities, the capital city showed input redundancy, resource based and traditional industrial city showed the shortage of input. 2)There is a negative correlation between urban development degree and urban efficiency in recent ten years, the level of economic development and the population density have promoted the urban efficiency, however, the urban constructional land area has negative relationship with urban efficiency. 3) The high matching level of urban efficiency, urban development degree and the degree of coupling between the two in space presents a more and more remarkable agglomeration characteristics.