The report of the 19th National Congress of the Communist Party of China pointed out，Urban pattern of coordinated development of large, medium and small cities and small towns with urban agglomerations。Current，Beijing -Tianjin -Hebei、Long Triangle、Guangdong -Hong Kong -Macao Greater Bay Area、The urban agglomeration or the metropolis circle represented by the Shandong Peninsula，It has become the most important position in my country to gather production factors and drive regional economic growth。In the context of the level of regional integration,，Even Beijing、Shanghai、Guangzhou and other traditional sense "oversized cities" and "first -tier cities"，It is also necessary to rely more and more resource integration capabilities and regional radiation effects of its urban agglomeration，Strive to win cities competition in the country and even the world。Realize the high -quality development of the urban agglomeration and the coordination and win -win results of its internal, medium and small cities，Not only will it help improve the competitiveness of the urban agglomeration and the sustainable development of the economy and society，And to boost the overall demand in China，Finally realized the transformation of economic development methods，It has important strategic significance。

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The high -quality development of urban agglomerations mainly includes economic efficiency、Regional coordination and environmental friendly three connotations。Economic efficiency means that the urban agglomeration has stronger industrial competitiveness and higher per capita income (output) level。Regional coordination is to avoid "one city independent" in the provincial or urban agglomeration.，and continuously narrow or control the regional economic gap in a reasonable range，This is also conducive bet365 best casino games to the healthy development of the county economy and the implementation of the strategy of rural revitalization。The key to environmental friendship is，Urbanization and regional economic development process minimize pollution emissions，Realize the intensive use of resources，This requires that the number of urban population and economic activities does not exceed the bearing capacity of the regional ecological environment。Realize the above high -quality development，It depends on the space structure optimization of the urban agglomeration，Choose a reasonable spatial mode for the future cities (town )ization process。

For the development of a large country with a vast land and a huge population like China，Suitable for implementing the "multi -central integration" urban agglomeration strategy，In the context of regional economic integration，Realize multi -centralized urban agglomeration spatial structure layout。"Multi -Center" means in a single urban agglomeration，It is not advisable to excessively concentrate population and economic activities in a large city，Instead, it should be borrowed in scale、Multi -centers for complementary functions and industrial interaction、The structure of the network urban agglomeration system。"Integrated" emphasizes to break the administrative barriers within the urban agglomeration，Eliminate policy differences，Strengthening inter -regional collaboration，Promote the production between cities、Comprehensive cooperation in the fields of commerce and transportation，Really realized in infrastructure、Marketing System、Policy measures and other aspects of interconnection and open sharing。and multi -central space structure and integrated development model fusion，can be in a wider regional market，More full use of the resource endowment and industrial advantages of the respective cities and small and medium -sized cities，Let the formation of functional complementary functions between large and medium -sized cities，Center (bet365 live casino games or sub -center) cities develop benign competition，Improve the economic efficiency of the region while narrowing the development gap between cities，Realize regional coordinated development。

　Improve the comprehensive development quality of the area

Integrated itself is to break market barriers in various places，The process of connecting to different regional markets in the urban agglomeration，It will enhance the competitive intensity of various industries in the region。Compared to the integration of a single central urban agglomeration，Multi -central integration is easier to promote cities，Especially cities (or sub -centers) cities are developing import and export markets、Develop high -end industry、Attract the population, especially high -skilled talents and other fields to start fierce competition。Since the geographical distance within the Bet365 lotto review urban agglomeration is close to，High market integration，Multiple cities in the same city group，Industrial competition relationships are usually more obvious than big cities with different urban agglomerations。Especially the finance mainly located in regional central cities、Technology Service、High -end industries such as high -tech manufacturing，The subtle differences of products or services have a great impact on corporate profits，and the total market demand in a specific area is limited，Multi -central urban agglomeration will make high -end industries distribution widely、Quantity more、Market competition is more intense，Promote the survival of the fittest and efficiency improvement within the industry，Improve the industrial competitiveness and product added value of urban agglomerations, especially centers (or sub -centers) cities。

Multi -central integration of the urban agglomeration will improve the comprehensive development quality of the area through the sharing mechanism。The integration of market and investment reduces the exclusion of public goods between regions，Objects that can be shared in different cities mainly include the following two categories。The first category is infrastructure, especially bet365 best casino games large transportation and logistics facilities。For example，Harbor、Large -scale civil airports are usually built in the central city or transportation hub city in the urban agglomeration，Allow residents and enterprises in other cities to use。The urban agglomeration in the center center is easy to concentrate the infrastructure too much in the central city，Big useful load、Speaking of high maintenance costs，It will also lead to some cities that are far away from the center.。Multi -central integrated urban agglomeration can scatter the airport and other infrastructure in several central cities，If the Yangtze River Delta urban agglomeration currently has Shanghai Pudong、Nanjing Lukou、Hangzhou Xiaoshan and other 4F -level civil airports，Shandong Peninsula Urban Group, which is known for its sea transportation, has Qingdao、Yantai、Rizhao、Weihai and other large -scale freight port，To a large extent, it is largely avoided by problems that are inadequate or inconvenient due to the excessive infrastructure。The second type is a wider labor market。Most of the knowledge -intensive industries are mostly concentrated in the center (or sub -center) city of the urban agglomeration，This area has become a "main force" that attracts high -skilled labor forces，So compared to single central urban agglomeration，Multi -central integrated urban agglomeration can usually provide workers with more employment location selection，You can "bloom more" to attract high -skilled talents in various industries。At the same time，Regional integration can also ensure that workers can conveniently purchase products and services provided by other cities。Shanghai in the Yangtze River Delta urban agglomeration、Nanjing、Hangzhou、Suzhou，Guangzhou in the Pearl River Delta、Shenzhen、Zhuhai，All are the key cities that attract foreign populations, especially high -skilled talents.，and formed a regional brand effect that attracts more people to come to employment and start -up。

　Promoting regional coordinated development

Multi -central integrated development of the urban bet365 best casino games agglomeration helps to reduce the gap between income between regions，Promoting regional coordinated development。Integrated and facilitation of market and investment，Help products、Technical level and the price of production factors, including workers' wages, converge between different regions。Therefore，Regional economic integration itself is to promote regional coordination、Important mechanisms to reduce the economic gap in the region。Multi -centered urban agglomeration space structure will further release the promotion role of economic integration on regional coordinated development。When there is a gathering advantage，The concentration of elements and population spaces will lead to relatively concentrated high income and high productivity in individual geographical areas，and self -strengthening this high -income geographical concentration and space inequality through the siphon effect，On the other hand, there will be positive overflow (radiation) effects on the place where the gathering location is produced。For the urban agglomeration，This "individual area" is the central city of the urban agglomeration。The urban agglomeration of a single center space structure will be more population、Elements (especially high -quality production factors) are invested in a single central city，Gathering advantages and overflowing effects can only exist in this central city and nearby。and multi -central urban agglomeration can distribute population and elements in more than one central city，This can make high income and high productivity brought by space gathering at more places，Then the overflow effect generated by multiple cities at the same time，benefit more small and medium cities (town)，Improve the income level of small and medium -sized cities，Reduce their economic development gap with the big cities。Drives small and medium -sized cities through big cities，Small and medium -sized cities radiation surrounding villages，Realize regional coordinated development and rural revitalization。

The development experience of the Yangtze River Delta Bet365 lotto review urban agglomeration is worthy of attention。On the one hand，The Yangtze River Delta urban agglomeration has a relatively obvious multi -center features。Shanghai as the largest city in the city group、At the same time of the core city，Nanjing、Hangzhou、Suzhou、Ningbo and other large cities also play a role in the secondary center，Trade with Shanghai、High -end industry、attracting talents and other aspects to form a pattern of complementary and competitive competition，At the same time, it has formed complementary with Shanghai in terms of geographical influence。If Nanjing is Wuhu in the city group of the Yangtze River Delta、Ma'anshan、Economic radiation effects in Zhenjiang and other places，In many ways, it is stronger than Shanghai。On the other hand，The integrated development of the Yangtze River Delta urban agglomeration is also typical。For a long time，There is a high degree of industrial association between members of the urban agglomeration，Many southern Jiangsu、The leading industries of small and medium -sized cities in northern Zhejiang can form a docking with the industries in central cities such as Shanghai, Nannang Hangzhou，or undertake manufacturing transfer from central cities，High level of production integration。other，The Yangtze River Delta area is on the road、Railway、High Speed ​​Rail、Water transportation and other aspects of infrastructure perfection，Material transportation between regions and convenient population flow，High degree of integration of transportation。This multi -central integrated development mode，promoted Shanghai、Nanjing、Hangzhou and other large cities benign competition，Relieve the population congestion in Shanghai，It is also conducive to better use of the front overflow effect of large cities around the surrounding cities。This makes the Yangtze River Delta urban agglomeration one of the most economic development level in my country and the most attractive population attractive urban agglomeration，At the same time, there are relatively controllable internal regional development Bet365 app download gaps and urban and rural income gaps，And also maintains a better and healthy ecological environment。

　(this article is the key project of the National Social Science Foundation "The Study on the Economic Influence and Economic Influence of the Division of the Urban System in China" (18AJL010) phase results)

(The author is a professor at the School of Economics Management of Southeast University; Associate Professor of the School of Economics of Shandong University)