| At the beginning of the 21st century,the annual growth rate of urbanization in China has gradually dropped to a rate of 0.27%,and it has shown a slowing development trend,gradually moving toward the stage of mature urbanization[1],and incremental planning has gradually transformed into stock planning[2].China has been affected by the disappearance of the demographic dividend after the global financial market and the Lewis turning point,and has entered the period of economic new normal development,and there has been a contraction phenomenon with Chinese characteristics dominated by county shrinkage[3].Many scholars believe that the growth and stock planning with growthism as the basic idea will eventually end[4].The northeast old industrial base,known as the Chinese version of the’rust belt’area,faces a severe situation with wide contraction,strong intensity and strong differences,especially in Jilin Province,which is located in the center of the Northeast,where local contraction occurs in more than 50%of the county level.20%of the region’s population density declines,30%of the region’s registered population shrinks,and the degree of contraction is still increasing[5],the need to change the long-term solidified growthist ideas,recognize the current state of contraction development,from passive decline to shrewd the way.In the context of the above research,the text expands on the following four parts:The first part summarizes the main development concepts adopted by China and the Western countries dominated by the United States,Germany and the United Kingdom in different development contexts,corresponding to different characteristics of contraction phenomenon,summed up the growth-based contraction based on growthism and based on streamlining The adaptive contraction paradigm,combined with the development characteristics of China,summarizes the enlightenment:First,the adaptive contraction paradigm based on streamlining is more in line with the development characteristics of China’s new urbanization and the developmental needs under the new normal mode of economic growth.Secondly,the savvy contraction perspective based on the adaptive contraction paradigm is more in line with China’s development strategy of adhering to the"sustainable development path"and the core of the scientific development concept"people-oriented".Finally,spatial reconstruction can become the main planning means under the"strong government"system in China under the development characteristics of county space shrinkage.By establishing a clear perspective of savvy contraction,it lays the foundation for the construction of the theoretical framework.The second part:puts forward the research ideas of county space reconstruction from the perspective of savvy contraction,and clarifies the core idea of improving the use efficiency of county-level functions through shrinking spatial reconstruction,thereby improving the living environment of people and nature,and Taking this as a guide,the theoretical framework of three-stage research on county spatial reconstruction in China is constructed.Firstly,it is the study of leading function positioning.According to the principle of sustainable development of functions,the agricultural production,non-agricultural production and social security with the leading functions of county space are defined.Five types of cultural heritage and ecological protection,as well as functional development and structural characteristics.Secondly,the research of spatial reconstruction model,based on the principle of spatial complexity development,clarifies the content and characteristics of the complex network and energy activities of the space system under the space complexity theory.Finally,the reconstruction mechanism is established.According to the interactive development principle of the mechanism,the interactive development strategy and interactive dynamic guarantee of the county spatial reconstruction mechanism are respectively defined.By constructing the theoretical framework of county space reconstruction in China from the perspective of savvy contraction,it lays a theoretical foundation for practical research in Jilin Province.The third part:mainly in the northeastern part of China,where the contraction phenomenon is the most serious,and the most typical contraction problem in Jilin Province as the research object,the phased practice study of the theoretical framework.The first stage:based on sustainability,the leading function positioning of county space in Jilin Province.Firstly,the content of the leading functions of county space in Jilin Province is clarified.Secondly,the evaluation system of the leading function of county space in Jilin Province is established.Finally,the results of the leading function of county space in Jilin Province are analyzed.The study found that the county space in Jilin Province is not only rich in agricultural resources,but also has obvious advantages in cultural resources development.It conforms to the development concept of smart contraction and cultural value mining.In the spatial distribution of leading functions,the economic and social functional units of county space in Jilin Province are subject to space.The structural influence is obvious,while the cultural and ecological functional units are obviously affected by the topography.The second stage:the determination of the spatial reconstruction model of the county in Jilin Province based on complexity.Firstly,the research method of county space complexity in Jilin Province was proposed.Secondly,the spatial structure type of county in Jilin Province was judged.Finally,the shrinkage reconstruction mode of county space in Jilin Province was defined,and the technical route was demonstrated by the county unit that needs to be reconstructed.The study found that the county-level unit with the dominant function of agricultural production has a strip-type structure,adopting the migration and reconstruction model;the county-level unit with non-agricultural production leading function has a radial structure,adopting a layer-by-layer gathering reconstruction model;the county with social security leading function The unit is a group-type structure,adopting the in situ annexation reconstruction mode;the county unit with the dominant function of cultural inheritance is a scatter-type structure,adopting the enclave merge reconstruction mode;the county unit with the dominant function of ecological protection is a constellation structure,and adopts the off-site migration.Refactoring mode.Among them,the reconstruction of the county unit of social security and cultural inheritance function is the most urgent.The third stage:the establishment of the county space reconstruction mechanism in Jilin Province based on the interaction.Firstly,from the aspects of policy reform and public participation,the development strategy of county spatial interaction reconstruction in Jilin Province is clarified.Secondly,the dynamic guarantee of spatial interaction reconstruction in Jilin Province is defined from two aspects:urban system and industrial advantage.The study found that Jilin Province has the conditions to implement the“Internet+”participation method from the bottom up,among which the county-level unit with social security as the leading function has better demonstration conditions,especially the Meihekou City has the potential to become a model county for this participation mode.The fourth part:based on the theoretical and practical research content,summarizes the five main research conclusions of the full text,puts forward the three shortcomings of the research,and clarifies the development direction of future research work. |
