| Along with our country economy entered the "new normal",the process of urbanization was also advancing rapidly.However,problems such as blind expansion of urban land,waste of land resources and low efficiency of land use restrict the effectiveness of urbanization.The development of land urbanization and its efficiency were becoming more and more important and difficult in the study of urbanization.In order to meet the demand of new urbanization,this paper has important practical significance and demonstration effect in study of the spatiotemporal characteristics as well as the efficiency of land urbanization in Hunan Province.At first,this paper described and analyzed the temporal and spatial characteristics of land urbanization in Hunan Province from 2001 to 2015.And then established a comprehensive index system for evaluating the efficiency of land urbanization,which was used for measuring the dynamic efficiency and static efficiency of land urbanization in Hunan province in 2000,2005,2010 and 2015 using data envelopment analysis.Finally,according to the development process of land urbanization and the efficiency of land urbanization in different regions,we divided the comprehensive development type of land and urbanization and put forward corresponding suggestions for improvement.The main conclusions of this paper are as follows:(1)From 2001 to 2015,the development of land urbanization in Hunan Province showed three stages of development:stable,fluctuating and rapid.The average increase rate of urban construction land of Dongting Lake area was the highest in each land comprehensive utilization area.In all level of town,the higher of the scale of cities,the faster of the average growth rate of urban built-up land.(2)In terms of the spatial distribution of land urbanization,the law of distribution of urban built-up land in Hunan Province was:high in west and low in east,high in north and low in south.The agglomeration of urban built-up land area increases with time,but the spatial distribution is quite different.In 2015,the median value area of urban built-up land in Hunan Province was distributed around the high value area,while the low value area was mainly distributed in Wuling Mountain area,Xuefeng Mountain area and Nanling Mountains.(3)The dynamic efficiency of land urbanization in Hunan Province has stages:From 2001 to 2011,the Malmquist index of land urbanization increased and the main driving force of the rise was the rise of the pure technical efficiency index.From 2011 to 2015,the dynamic efficiency of land urbanization declined,due to the scale efficiency change index continues to decline.(4)From the point of view of the static efficiency of Land Urbanization,from 2001 to 2010,the comprehensive efficiency of land urbanization increased in Hunan Province,and rom 2010 to 2015,the comprehensive efficiency of land urbanization declined slightly,mainly affected by pure technical efficiency.The spatial distribution of static efficiency of land urbanization has obvious regularity:The low of static efficiency of land urbanization in 2000 and 2005 was high in east and low in west,high in south and low in north.The low of static efficiency of land urbanization in 2010 and 2015 was high in east and west,high in south and north.At the beginning of the study,the northwest area of hunan province was a concentrated area with low comprehensive efficiency,while the high-value aggregation area was widely distributed in middle,east and south regions.At the end of the study,the area form south of Changsha city to Hengyang city and west of Hunan is the high value aggregation area of comprehensive efficiency,while the southern and north of Hunan and were the low value aggregation areas of comprehensive efficiency. |
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