Spatial-Temporal Coupling Relationship Between Urbanization Efficiency And Economic Development Level In The County Of Jiangxi Province

In recent years,with the acceleration of the process of urbanization,great achievements have been made in urbanization in China,and urbanization has increasingly become an important driving force for the development of the country or the region.However,the urbanization model,which only focused on speed and neglected quality,has caused many contradictions in the process of urbanization.The main manifestation is the low efficiency of urbanization.Therefore,how to improve the efficiency of urbanization and coordinate the relationship between urbanization efficiency and the level of economic development has gradually become a focus of concern in the academic community.From the perspective of input-output,this paper uses the DEA model and super-efficiency model to analyze the efficiency of county-level urbanization in Jiangxi Province,and uses the entropy method and spatial autocorrelation method to analyze the economic development level of county-level cities in Jiangxi Province.Coupling coordination model,analyzing the coupling and coordination relationship between the two,reached the following conclusions:(1)From 2005 to 2015,the comprehensive efficiency and scale efficiency of county-level urbanization in Jiangxi Province showed a "V"-type fluctuation trend that dropped first and then rose.Pure-technical efficiency showed a continuously rising trend,and the comprehensive efficiency of urbanization changed.Significantly,the overall efficiency of urbanization in the county area is ineffective as a whole.Pure technology efficiency and scale efficiency are overall higher than comprehensive efficiency.At present,pure technical efficiency is the main reason for the inefficiency of urbanization efficiency.In 2010,scale efficiency was the main factor affecting the efficiency of urbanization.(2)From the perspective of spatial distribution,from 2005 to 2015,counties(cities)with high comprehensive efficiency,pure technical efficiency,and high efficiency in the county are mainly distributed in the north and southwest regions of Jiangxi Province,and the north is mainly based in Nanchang City.The center has formed an efficient county(city)agglomeration area with comprehensive efficiency,and has taken the center of Zhangzhou city in the south to form an agglomeration area with comprehensive efficiency and effective counties(cities).In terms of space,the structure of changes in the circle of "central urban area effective type low ineffective type-high inefficiency type-strong ineffective type" is presented.(3)From 2005 to 2015,the input and output of county-level urbanization in Jiangxi Province did not reach the optimal state of the production frontier.Both the input and output factors have redundant inputs and insufficient output.The land input factor is always with the greatest amount of redundancy,the lack of population and economic output in the output elements gradually evolved into insufficient output factors for residents'lives and society.(4)From 2005 to 2015,the coupling degree of urbanization and economic development in counties in Jiangxi Province showed an inverted"U"-type growth trend,and the coordination at the three-time points was in the medium coupling stage and the coupling of counties(cities)The degree of coordination varies greatly.The county(city)outskirts of Nanchang City exhibited prominent high-value clustering areas(hot spot areas),and the south of Fujian Province presented continuous sheet-like low-value clustering areas(cold spots).The spatial pattern of hotspots varies greatly.In 2005,the hotspots were mainly concentrated in the surrounding counties(cities)of Nanchang City.In 2010,the hotspots spread to the northeast and southwest,and in 2015,the hotspots contracted in the northeast and southwest directions.Spread,with a strip shape distribution.(5)The economic development level and coupling degree of counties in Jiangxi Province are inverted "U" type,and the relationship between the counties in Jiangxi Province is currently on the left side of the inverted"U"type.The increase in economic development level in a scertain period of time promotes the coupling degree.Increase;When the economic development level crossed the turning point of 0.7,the coupling degree decreased with the increase of economic development level.