Abstract
In the past 40 years, China has been in a rapid urbanization phase, a high-quality urbanization strategic pattern based on the "city group - metropolitan areas - national central city - coordinated development of small and medium cities - characteristic towns - rural revitalization" as a system, the metropolitan area plays a key role in connecting the preceding with the following. With the further development of urbanization, it is of great strategic significance to pay attention to the construction of metropolitan areas for promoting the coordinated development of regions. Cultivating a modern metropolitan area involves social management, public services, industrial development and other aspects. This study take the capital metropolitan area with extremely unbalanced development as the object, and study its development status and optimization strategies from the perspective of industrial coordinated development. Economic globalization leads to the transformation of world city system, and the spatial economic structure characterized by "industrial chain" is transforming to the spatial economic structure characterized by "value chain". Zilai Tang and Miaoxi Zhao put forward the method of value-added hierarchy analysis to investigate the hierarchical system, basic characteristics and development changes of regional spatial economic structure, which provides a basis for the coordination of regional economy in the formulation of industrial policy. In addition, in order to further deepen the research on industrial structure, clarify the types of leading industries in each city and avoid homogeneous development, the location entropy index proposed by P.Haggett is of great significance for analyzing the situation of regional leading specialized departments. First, this study summarizes the research results of the existing metropolitan area, defines the research scope of the capital metropolitan area, and analyzes the development status, changing trend and reasons of the urban industries in the capital metropolitan area based on the basic data such as the output value of the three industries. Second, the value-added hierarchy analysis method is adopted to reveal the industrial division system in the metropolitan area based on the data of industrial added value of each city in the capital metropolitan area in 2015, and the optimization target is proposed according to the domestic policy requirements for the industrial development of the modern metropolitan area. Third, taking the central cities of Beijing and Tianjin as the research objects, location entropy and Boston matrix analysis were adopted to analyze the degree of specialization of the tertiary industry in the two cities based on the added value data of different industries in the two cities in 2016, so as to avoid excessive homogenization and promote the high-level coordinated development of the service industry in the central cities. The results show that the industrial development of the capital metropolitan area still has great room for improvement. a) The development gap between the central city and the surrounding cities is significant, and the surrounding cities are still far from realizing the development goal of advanced manufacturing dominated by high-value sectors. b) In order to promote the high-level coordinated development of the service industry in the central cities of the capital metropolitan area, it is necessary to further clarify the direction of professional development, promote the outward distribution of other service industries, and avoid homogeneous competition. With the increasingly clear division of labor in the global value chain, the approach of using the data of added value of sector to study the regional spatial economic structure and characteristics of the research method is of great significance to the economic diversity.
