| To realize urban and rural development, it is important to adhere to industry nurturing agriculture and cities support rural policy, speed up new countryside construction, and promote the coordinated development of urban and rural areas. For the present and future, urban and rural development has become an important research topic within a certain period of time in Chongqing. For Chongqing, the key is to realize the coordinated development of industries, while the adjustment of industrial structure based on Industrial Agglomeration. Meanwhile, Experience at home and abroad has proved industrial agglomeration for the promotion of regional coordinating urban and rural areas of great significance.From the industrial agglomeration and regional urban and rural perspective, by compiling a longer period of time-series data, the degree of concentration of industries in Chongqing and the level of urban and rural areas had been studied. In general, the patterns of spatial industrial agglomeration and the status of industrial division of labor in Chongqing City had been grasped."Urban developed economies Circle"is no longer to be manufacture center, but to be the growth pole for the surrounding regions on trade, financial, information, service functions;"one-hour economic circle"will to be productive center and to act as the intermediary to improve economic and technological spread from"city developed economic circle"to"wings"; the sub-central cities in"wings"will to act as the intermediary to spread the economic and technological power from"one-hour economic circle"to"wings"and the nodes of rural-urban agglomeration of kinds of element; the small cities and towns in"wings"are productive, which serve as the intermediary to spread the economic and technological power from"sub-central cities"to rural areas and the nodes of rural-town agglomeration of kinds of element; in rural areas, large-scale agricultural production supports the demands of cities and towns for resources. It is useful to obtain economies of scale of agricultural operations and the overall effectiveness of urbanization. Ultimately the pattern of mutual integration of modern urbanization and rural urbanization will be formed.The main content is as follows:①Agglomeration Effects on Urban and Rural DevelopmentThis part is Chapter 3. Through the theoretical analysis of the industrial clustering and the urban and rural co-ordination,combined with urban and rural development experience at home and abroad against China's national conditions and historical status, the dual role of cities and towns had been discussed, that is, through the accumulation and proliferation cities and towns can generate the pulling effect on the rural economy and urban development.②Empirical Research on Urban and Rural Development in ChongqingThis part is from the first section of chapter 4. Based on previous research, a set of index system suited for horizontal and longitudinal comparison is established, and factor analysis is used to measure the level of the urban and rural development in Chongqing. The results show that: overall level of urban and rural is very low, not only far lower than East China (Jiangsu Province), and also lower than Central China (Henan Province), as well as the national average, and even with Sichuan Province in comparison, the gap is obvious.③Measurement of Industry Agglomeration in ChongqingSpace concentration Index, location entropy and industrial concentration index are applied to discuss the degree of various industries specialization and change in Chongqing in recent years. Meanwhile, in view of Chongqing city"one circle and wings"economic geography development pattern, the regional concentration of industries had been analyzed. Generally speaking , Chongqing's industrial agglomeration mainly depends on the traditional manufacturing areas, and for technology-intensive and capital-intensive industries, there is clearly insufficient.④Selection of Leading Industry Based on Industry Cluster in ChongqingThis part is the fifth chapters. First of all, according to trend, the industrial correlation, innovation, regional comparative advantage and sustainable development benchmarks, a set of index system containing 17 indicators were established to assess regional leading industry. Secondly, in the course of determining the leading industries of Chongqing, research perspective had been extended from the traditional secondary industry to the modern service industry, at the same time, the support vector machine (SVM) method had been introduced for quantitative analysis. The leading industries of Chongqing were obtained by analysis of 43 industries.⑤Study on Industrial Agglomeration Development based on Urban and rural areas of ChongqingThis part is the sixth chapter. Countermeasures and suggestions are put forward to promote the development of urban and rural areas of Chongqing through the development of industrial agglomeration. Under the growth pole theory, a hierarchical filter was built, and combined with Wilson's model, the sub-regional development centers in Chongqing had been determined. And then industry support environment of Chongqing urbanization development was constructed, and on this basis, industrial belts in"one circle and wings"of Chongqing was emphasized.Papers have the following theoretical and methodological innovations:①In context of Chongqing urban and rural, integrated with location entropy, spatial concentration index and industrial clustering evaluation index, manufacturing and tertiary industry in Chongqing were researched. Changes and regional specialization of the major industries agglomeration in Chongqing were obtained. It is helpful to optimize the industrial structure in Chongqing, implement industry to subsidize agriculture, and promote the development of urban and rural.②It is difficult to choose leading industries, because of insufficient samples and nonlinear correlation. First of all, according to trend, the industrial correlation, innovation, regional comparative advantage and sustainable development benchmarks, a set of index system containing 17 indicators were established to assess regional leading industry. The support vector machine (SVM) method had been introduced for quantitative analysis. The leading industries of Chongqing were obtained by analysis of 43 industries.③Under the growth pole theory, a hierarchical filter was built, and combined with Wilson's model from geography to measure the degree of membership of other cities in Chongqing, the sub-regional development centers in Chongqing had been determined. And on this basis, to the leading industry leader, to secondary cities as the backbone nodes, we studied how to develop Chongqing " one circle and wings " industrial belts along the urban network.
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