| Land is the material and space carrier of human activities,and also an important guarantee to support the development of urbanization.The quality of urbanization affects the efficiency of urban land use,and the efficiency of urban land use also affects the level of urban development.At present,China is constantly advancing the process of urbanization,the rapid development of urbanization will bring certain pressure on urban land resources,which makes the contradiction between land supply and demand intensified.Based on this,it is helpful to realize the orderly development of urban land use efficiency and urbanization under the background of healthy and sustainable development.Henan province,located in the core of the central plains economic zone,has the task of ensuring national food security and promoting the economic development of the central region.It is typical and representative to study the relationship between urban land use efficiency and the coupling and coordinated development of urbanization in Henan province.This paper takes Henan province as the research area.Firstly,it summarizes the current situation of urban land use and the process of urbanization development.On the basis of summarizing relevant literature,it selects 20 indicators to establish a comprehensive evaluation system.Secondly,through the comprehensive evaluation index model,the coupling model,the coupling coordination degree model and the relative development degree model from 2008 to 2016 in Henan province city land use efficiency and research on the dynamic change of urbanization coupled coordination development level,using ArcGis software,and spatial visualization technology and spatial autocorrelation model of 18 cities in Henan province urbanization coupling coordination degree of urban land use efficiency and the spatial characteristic and spatial clustering characteristics were analyzed,then come up to the following conclusions:First,Analysis of urban land use efficiency and the urbanization development level in Henan province:both present a tendency of increasing the comprehensive evaluation index,the relative level of development can be divided into three stages:2008-2011 in the urbanization development relative lag phase,from 2012 to 2014 in urban land use efficiency and synchronization of urbanization both developing stage,2015-2016 in the stage of urban land use benefits relatively lagging.From the perspective of each subsystem of urban land use efficiency and urbanization,it is generally on the rise,but the development is unbalanced.Secondly,Analysis on the dynamic change of coupling coordination level between urban land use efficiency and urbanization in Henan province:the coupling degree of urban land use efficiency and urbanization increased significantly in 2008,and generally remained stable during 2009-2016.In 2008,the coupling was in a low level,while in 2009-2016,it was in an antagonistic stage.The value of coupling coordination degree is between 0.1192 and 0.6607,and the degree of coordination has gone through six development stages,namely,severe,moderate,mild,close to disorder,and barely primary coordination.Thirdly,Analysis on spatial characteristics of coupling degree of coordination between urban land use efficiency and urbanization in Henan province:in 2016,there were significant spatial differences in coupling degree of coordination among 18 prefecture-level cities,that is to say,based on their geographical location,the development pattern of northwest China was higher than that of southeast China.Based on the global autocorrelation analysis,the regions with similar urban land use efficiency and urbanization coupling coordinated development level in Henan province show a trend of gradual agglomeration followed by random distribution,and spatial clustering first increases and then decreases.Based on local autocorrelation analysis,the high-value clustering areas(HH)in 2012 and 2016 are Zhengzhou and Jiaozuo respectively,and the low-value clustering areas(LL)in 2012 are Zhoukou,Zhumadian and Shangqiu.Finally,based on the theories of system and sustainable development,this paper proposes the ways to optimize the coupling and coordinated development of urban land use efficiency and urbanization in Henan province from the aspects of giving full play to the driving role of central cities,promoting the process of ecological and environmental protection,and scientifically planning the urban development pattern,so as to promote the sustainable development of Henan province. |
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