With the process of urbanization in China, it continues to advance，Urban population scale distribution presents a non -equilibrium phenomenon that coexistence of "population agglomeration" and "population contraction"，Specific performance as the rapid expansion of large cities, especially in large cities、Small and medium -sized cities with relative contraction of polarization tendencies，This is different from the coordinated urbanization strategy of large, medium and small cities formulated by the country。At the same time，With more fast and convenient transportation such as high -speed railways and highways,，Population space liquidity is generally enhanced，Makes the urban population growth of obvious spatial correlation features。So，Fully realize the important role of urban population scale in the optimization of urban system，Put forward the feasible path for the orderly growth of the urban population and the reasonable optimization of the urban system，Provide reference and suggestions for formulating population planning and high -quality development policies for government departments，It has important practical significance for promoting the high -quality development of the urban economy。

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China's urban population size presents obvious space gathering features。Since 1990，With the large -scale population gathering towards the city，Geographical distribution presents obvious space non -balanced features。At the national level，The population bet365 Play online games distribution of China's urban population is basically in line with the famous "Hu Huanyong Line"，Generally presenting the "Dongmi and West Shu" pattern。Although the population of the population in the central and western regions continues to high -intensity agglomeration to the east coastal region, it has changed，But the "Hu Huanyong Line" still maintains a high degree of stability。At the area level，The flow of population is mainly flowing from the central and western regions into the eastern coastal cities，Overall presentation "Large -scale migration、Small scale concentration "pattern，Pearl River Delta urban agglomeration、The Yangtze River Delta urban agglomeration and the Beijing -Tianjin -Hebei urban agglomeration are a high gathering place for the population of the city in China。Generally speaking，The population distribution of China's urban population is highly related to the space around it，The features of local space agglomeration are particularly obvious。

There is a significant synergy effect in urban population growth。The first is the space overflowing effect of the population growth of the central city in the peripheral city。The density of population agglomeration in the central city of China is significantly higher than peripheral cities，There are obvious spatial gradient features。Based on the theory of "Center -Movement"，The central city has strong resource administrative mobilization capabilities，It has a strong attraction for the aggregation of the population and elements，And the population carrying capacity will increase with the increase of the city's scale，It will generate space competition effect on the population growth of the peripheral city。With the increase in population and industrial agglomeration，The central city will pass the demonstration、Radiation and sharing effect Promote the population agglomeration and economic development of peripheral cities，It will have a space overflow effect on the population growth of the peripheral city，Makes each other neighboring cities motivated to each other、Adopting similar strategies to promote population growth。Second, the population growth of small and medium -sized cities has a borrowing scale effect for large cities。City between cities is generally proposed by Alonso's borrowing scale effect，Especially in small and medium -sized cities to borrow the scale effect on large cities, it is more obvious。Small and medium -sized cities in the periphery can promote its own population growth through "borrowing" the agglomeration effects of large cities and avoiding crowded effects，Borrowing scale effects that form a peripheral urban population growth。Third, the population growth between urban population has a significant positive and the same group effect。Under the perspective of urban architecture，The interaction between symbiosis and competition between cities，Strategic interaction in the behavior of the government，presents the characteristics of convergence。Under the action of local government competition and strategy interaction，When a city government takes active measures to increase the population scale，Its neighboring cities will adopt the corresponding imitation strategy，Make mutual learning and competition a source of interaction of population growth strategy between urban population。The scale of urban population is Bet365 lotto review a growing process，It is also a process of accumulation and self -improvement in the city's own experience。So，Urban population growth can be continuously updated and strengthened the implementation of their own behavioral decisions through self -learning and experience accumulation。At the same time，An imitation behavior of mutual learning and reference in the process of urban population growth，Not only the same scale cities will learn and learn from population growth experience，Cities in different sizes will also learn and imitate the behavior of other cities to expand the population scale，Cities with a large population scale are more likely to become imitated objects。other，The scale of urban population is also the result of competition between cities，The city government will adopt various competitive strategies to attract population entry，Such as public service supply and household registration system，Goal to achieve its own population growth。

Reasonable distribution and orderly growth of urban population is the basis for promoting the rationalization of the urban system。With the evolution of urban regional and networked development trends，The scope of the function of the centralized urban agglomeration effect presents regional characteristics。By sharing、Matching and learning channels or mechanisms affect peripheral cities，Especially with transportation、Industrial transfer、Election flow is continuously enhanced，The characteristics of urban population synergy growth are becoming increasingly obvious，It will accelerate the layout of the population space of the urban system。The rationalization of the urban population scale system is based on the freedom of population and migration，Results under the effect of the commonly weighing effect of the agglomeration effect and the crowded effect。Existing research emphasizes the restrictions on population flow to a certain extent to a certain extent hindered the optimization of the urban system，Under the circumstances that the reform of the household registration system is continuously advanced，Urban population flow disorder gradually eliminated，And other factors such as public service supply have gradually enhanced the restrictions on population flow，Makes new features and trends present in the urban architecture。

　　The spatial distribution of urban population and economy is mismatched

Due to geographical features、Resource endowment、Effects of industrial foundation and policy dividends，China's regional economic development pattern presents obvious space non -balanced features，Bet365 app download The features of the regional level presentation "East Qiang, West Weak" and "North -South Division" features，The "Administrative Level Bias" feature at the urban level。With the process of new urbanization and industrialization, it continues to advance，Eastern coastal areas and inland areas in the middle and western regions、High -level cities (including municipality、Provincial capital cities and deputy provincial cities) and low -level cities (including prefecture -level cities and county -level cities) have become the main gap in China's regional economic development，Specific manifestation as the distribution of population and economic spatial distribution，That is, when the Chinese economy gathers to the east or high -level cities，The population does not follow the degree of gathering，Make population agglomeration behind the economy，The distribution of urban population and economic space presents obvious mismatch features。

Discovery according to the national population and economic scale data at the national level from 1990-2020，The distribution of urban population scale from centralized to balance，Overall showing obvious flat trends，That is, with time,，The distribution of urban population scale is more balanced; the distribution of urban economic scale is from balanced to concentration，Overall showing a significant differentiation trend，That is, with time,，The distribution of urban economic scale is becoming increasingly uneven，Economic scale is becoming more and more concentrated in a few cities。This can be seen，City population and economic scale distribution presents mismatches of spatial distribution。Looking at it specifically，The number of cities with the consistency of population and economic distribution gradually increases，The number of cities with a population agglomeration lower than the economic agglomeration continues to decrease，and the number of cities with high population agglomeration higher than economic agglomeration increases faster。The reason for this phenomenon may be that with the continuous deepening of reform and opening up and the establishment of the market economic system，The urban economy has developed rapidly，The level of economic agglomeration is continuously improved，At the same time，The continuous deepening of the reform of the household registration system also makes more and more population enter the city，To a certain extent, many urban population agglomerations are lower than economic agglomeration。High -level cities and eastern coastal cities make full use of geographical location and policy dividend and other factors to quickly bet365 Play online games develop the economy，Attract a large number of migrants to enter，The population growth of other cities has developed a strong inhibitory effect，The number of cities where the population is higher than the economic agglomeration continues to increase。

From the perspective of different cities categories，The urban population and economic scale are mainly concentrated in high -level cities，The proportion of county -level cities is low，And the population and economic distribution in the Eastern -level city only show a good space consistency，Other level cities all show obvious space non -balanced features。The reason for this phenomenon may be that the higher the cities with the level, the more developed the economy，Make its economic agglomeration level stronger，Due to the differences in the supply of public services such as the household registration system and the differences in public services such as social welfare, the level of agglomeration is limited，This forms a phenomenon that population agglomeration is lagging on economic agglomeration; cities with lower levels are just cities with relatively backward economic development，Its economic agglomeration level is relatively weak，and gradually advance with the gradual elimination of household registration barriers and the equalization of basic public services，Make the level of its population agglomeration continuously，This forms a phenomenon that the population agglomeration is higher than the economic agglomeration。The existence of these two phenomena ultimately causes mismatch between the distribution of urban population and economic space at the nation level。

　Build a reasonable urban population -economic system

The continuous growth of urban population is a significant feature of the process of urbanization，It will promote the economic growth of the city through the agglomeration and scale effect，It will also promote the economic growth of neighboring cities through spillover effect。Reasonable urban system can promote urban economic performance improvement，regional economic layout that helps promote the formation of high -quality development。

First, the synergy effect of attaching importance to the growth of urban population，Promote the rationalization of the urban system。Due to the significant synergy effect of urban population growth，This requires strengthening exchanges and cooperation between cities，Give full play to the space dependence and spill nature of population growth，Promote the free and reasonable flow and effective gathering of population in cities。When the relevant government departments formulate policies，It should fully pay attention to the spatial correlation of the space in different sizes，On the basis of making full use of the comparative bet365 best casino games advantage of the city itself, the urban population growth is mutually dependent、Common Development，Both the agglomeration and radiation effect of big cities，Also pay attention to the accommodation and absorption of small and medium -sized cities，Forms a multi -level urban population growth pattern。By promoting urban population space gathering and coordinated development，Urban system that finally builds a reasonable layout of the urban population，Therefore, efficiently optimize factor resource allocation and give full play to the advantages of gathering or diffusion benefits。

Second, the distribution of urban population and economic space is gradually becoming balanced。The breakthrough point lies in formulating practical and effective measures，Break the barriers of the flow of population and factor，The strategy of transferring to high -level cities and industrial transfer to low -level cities through the implementation of population，While maintaining the population growth of high -level cities while promoting the economic growth of low -level cities，Matching the scale of the urban population and economic scale，Finally realized the balanced development of regional economy。For cities where population agglomeration is higher than economic agglomeration，It should make full use of the impact effect of urban economic development and human capital to improve its economic agglomeration level，We must pay attention to the use of their own advantages to develop the economy，Expand economic connection with external，Improve your economic agglomeration，Pay attention to improving its human capital level，Give full play to the contribution of the technological innovation brought by it，Then enhance the urban economic agglomeration。For cities where population agglomeration is lagging for economic agglomeration，It should give full play to the impact effect of the industrial structure and macro policy intervention to improve the level of population agglomeration。On the one hand，To combine the regional urban industrial foundation and advantages，Continuously optimize the industrial structure upgrade，Cultivation and growth of the tertiary industry，Provide a good industrial foundation and employment position for the foreign population，Then continuously improves its population agglomeration level。On the other hand，Continuously increasing public fiscal expenditure，By improving the quality of urban public services，Gathering more people to cities to attract more people。At the same time，When formulating its own population and economic development strategy, each city should also fully consider the space connection between cities，bet365 best casino games Through strengthening communication and cooperation with surrounding cities，The spatial dependence and spill nature of the various elements between the city，Promoting the free and reasonable flow of factor and effective agglomeration，The linkage effect of enhancing the coordinated development of regional economy。

　　(This article is the National Social Science Fund general project "The Collaborative Effective Effective Effective Effect and Space Law Optimization of Perspective" (22BRK018) phased results)

(The author is a professor at the School of Economics and Law, Zhongnan University of Economics and Law)