The Study On The Impact Of Productive Services Agglomeration And Urban Population Size On Urban Productivity

In the past ten years,the development of producer services of China has maintained an outstanding momentum and played a decisive role in the national economy.However,in the actual development,the productive services industry lacks the overall planning for the development,and some remote cities are backward development,and some large cities are over concentration.This situation leads to the development of its agglomeration does not match the population size of city,seriously restricting the improvement of regional efficiency.At present,China is in the stage of accelerating urbanization.It is very important to deal with the interaction between the agglomeration of producer services and the population size of city.This paper takes the cities of prefecture level and above in China as samples,constructing a unified research framework on the impact of productive services agglomeration and urban population scale on total factor productivity(TFP),calculating the marginal benefit of the agglomeration and urban population scale,comparing the differences of urban productivity under the influence of spatial factors or not.The impact of industry characteristics,regional characteristics and agglomeration patterns on the results is further discussed.Firstly,the important concepts and theories involved in this paper are introduced.According to the basic theory,this paper explores the impact of the agglomeration of producer services and the size of urban population and their synergy on urban productivity for providing a basis for the following empirical research.Secondly,this paper studies the development status of productive service industry and urban population scale,summarizing the characteristics of the agglomeration of producer services,exploring the agglomeration effect of producer services and urban scale effect and the relationship between them.Thirdly,the empirical model is used to study the impact of the agglomeration of productive services and the size of urban population on urban productivity.The conclusion shows that the spatial error model has better explanatory ability.The agglomeration effect of producer services is obvious in some cities with small population size when considering the spatial relationship,and the productive services has agglomeration turning point in cities with large population.Transportation,warehousing industries and information software technology industries are more likely to achieve higher productivity in cities with smaller population size.However,financial industry,business service leasing industry and scientific research and technology industry have large inflection points.And the larger the size of urban population,the larger the inflection point.The cities with large population in eastern China are more likely to achieve scale effect while cities with medium and small population size in the central and northeastern China tend to have higher productivity.The marginal benefits of urban agglomeration in western China are low.Specialized agglomeration of producer services in cities with small population size achieve higher productivity.Productive services in cities with large population size are suitable for diversified agglomeration.Finally,policy recommendations are put forward.With the acceleration of urbanization,it is necessary not only to improve the carrying capacity of urban population,but also to expand the scope and depth of urban spatial economic links,to promote the agglomeration level of basic services in the central of cities of central China and western China,to strengthen the development of transportation warehousing and information software technology industries in cities with medium or small population size,to promote the development of specialized agglomeration of productive services in cities with small population size and the development of diversified agglomeration in cities with large population size.