Spatial Difference Of Population Peri-urbanization In China At Multi-scales

The rapid advance of urbanization since China's reform and opening up,urbanization rates in most regions of China increased at more than 1% per year with the result that some developed areas reached a high level of urbanization,while urbanization developments in many areas were not completely in the state of peri-urbanization and different development patterns of population peri-urbanization had happened in different areas,which were affected by the unique city and countryside dual structure and household registration system.In order to further study problems of population peri-urbanization,this study collated basic theories about peri-urbanization based on related researches on peri-urbanization at home and abroad;on the basis of the lewis dual economic structure theory,push and pull theory,darrow model,scale and scale effect theory,we analyzed the regional difference and spatial evolution characteristics of population peri-urbanization at multi-scales in China,and explored the heterogeneity and the development trend of geographical phenomena at different spatial scales,and what was more was to provide a reference frame for coordinating regional developments and making related policy after understanding deeply about the scale and space effects in population peri-urbanization area.This study employed the coefficient of variation,scale variance,statistical analysis,geographically weighted regression and other methods to analyze regional differences and spatial evolution characteristics of population peri-urbanization in China during years of 2000 and 2010 on the county,prefecture and provincial three levels;multi-scale classification characteristics,spatial distribution changes,spatial agglomeration types and etc indexes of the population peri-urbanization were demonstrated separately in the form of charts through the geographic information system software ArcGis and related drawing softwares.The results were as followings: regional differences of China's peri-urbanization all showed a gradual expansion trend at three scales since 2000;spatial differences of the peri-urbanization at different scales were significant,and the smaller the spatial scale,the larger the difference in the peri-urbanization area,showing the overall east-west gradient development pattern;the spatial correlation pattern at each scale was relatively stable,among which the nesting zone of "High-High" type was mostly distributed in the southeast coastal area and the "low-low" type was concentrated in the western region.OLS model and GWR model were introduced to reveal the drive mechanism of spatial differences,driving evolutional forces of the population peri-urbanization pattern into three aspects: economic development level,population flow and industrial structure.Finally,this study combined related theories of the population peri-urbanization,lessons learned from the foreign peri-urbanization development process and specific national conditions in China to put forward corresponding countermeasures and suggestions: accelerating reforms of the household registration system,optimizing the industrial structure,allocating resources between urban and rural areas rationally,and improving the ability of agricultural transfer population into the urban life.