Study On The Influence Of Urbanization Level Ana Industrial Structure Adjustment To Urban Economic Grorvwth

As a country or a region's economic and political center,the city is a concentration of advanced productivity and culture.It is most closely associated with economic growth,In 2015,80%of the total national economy comes from the city.Since reform and opening up,the level of urbanization in China has experienced a rapid growth process.In 2015,the household population urbanization rate has reached 39.9%,the resident population urbanization rate reached 56.1%.Along with the rapid development of urbanization,China's economy has gone through a stage of rapid development.GDP has increased from 367.87 billion yuan in 1978 to 68.55058 trillion yuan in2015.China's economy has maintained rapid growth for many years,as China entering the new normal stage,the economy has begun to moderate growth.In 2014,China's GDP growth rate was only 7.4%,further reduced to 6.9%in 2015.Mainly because our country has been dependent on export and investment driven economic growth mode,but now it is no longer meet the needs of the current economic development.Looking for new impetus to economic growth has become the subject of China's economic development.New urbanization construction is an important engine of economic growth,so it was given great expectations.The process of urbanization is the process of transferring rural population to urban areas.Therefore,in the process of urbanization,the labor force also has a regular transfer between the industries.Labor force transfers from the first industrial to the second and third industry continuously.By 2012,the proportion of the third industry output was already more than the second industry.In addition,the progress of urbanization leads to the increase of urban population.It requires the government to invest more financial support to meet the needs of the urban population for public products.On the basis of previous studies,firstly,it constructs the theory of inverted U between economic growth and urbanization,the theoretical framework that the industrial structure and government financial support should be compatible with the urbanization.Then the 287 prefecture level cities are divided into four categories according to the size of the population.Using data from 2003-2014,we build 5 panel econometric models that economic growth is driven by the level of urbanization and industrial structure for the country and four types of different scale cities(large,large,medium and small).And the five panel modes were estimated by Panel Data Generalized Method of Moments(PD-GMM)separately.Through the research of this paper,we can analyze the influence factors of economic growth in different scale cities in China.And it can provide valuable policy reference for the central and local government to formulate a reasonable urbanization strategy,industrial structure policy and fiscal expenditure policy.In addition,the low level of economic development of the city can learn from the higher level of economic development in the city's development experience,and thus get better development.So the research of this paper has important theoretical and practical significance.In this paper,we build a panel econometric model based on the theory of the inverted U curve between urbanization and urban output and the theory of industrial structure.Through the estimation of the model,we can obtain the urbanization rate corresponding to the optimal output of the city and the influence of industrial structure adjustment on urban output.The conclusion of this paper is:there is a significant inverted U curve relationship between urbanization rate and urban output,and the urbanization rate corresponding maximum output is 68.37%.Now China's household population urbanization rate is only 39.9%,therefore,the level of urbanization in China has a lot of room for improvement.For the four different scale cites,the relationship between the economic growth and urbanization is inverted u-shaped curve.But the moderate level of urbanization is different.The influence of industrial structure adjustment on the output in four kinds of cities is different.However,the second industry is still the main driving force of urban economic growth in the four different scale cities.At present,developing the modern industry of high tech and added value is the important task in our country.In the national and the four kinds of cities panel models,the government's fiscal expenditure has a significant impact on economic growth in the process of urbanization.The innovation of the paper is discussing the theory that there is a trend of inverted U curve between economic growth and urbanization level.And we build five panel econometric models for the national and four different size cities,using the PD-GMM method to estimate the various models and the results verify the existence of inverted U type trend.On the other hand,this paper uses the panel data of the prefecture level city to build model,and the city classification method was adjusted in accordance with the size of the population classification.The estimated results verified that for different scale cities,the urbanization corresponding to the optimal output of the city are different,and the influences of industrial structure and the government's fiscal expenditure on economic growth are also different.