Expound the main theories of regional economics.

The main theories of regional economics include location theory, regional development theory, regional competitiveness theory, regional economic growth theory and regional economic policy theory.

First of all, location theory

Location theory is one of the basic theories of regional economics, which studies the spatial layout and distribution of economic activities. This theory mainly focuses on the spatial distribution of industries and the relationship between regions, and studies the spatial distribution and spatial relationship of economic activities through cost-benefit analysis and other methods.

Second, the theory of regional development

Regional development theory studies the development laws and differences of different regional economies. It pays attention to regional economic growth, industrial structure adjustment, population mobility and other issues, explores ways and measures to promote economic growth in specific regions, and provides theoretical basis and scientific guidance for government decision-making.

Third, the theory of regional competitiveness.

The theory of regional competitiveness studies the competition and comparative advantage between different regions. It pays attention to the influence of regional resource endowment, industrial structure, innovation ability and other factors on regional competitiveness, and explores how to realize the optimal allocation of resources and improve the overall economic benefits of the region on the basis of giving full play to the advantages of each region.

Fourth, the theory of regional economic growth.

The theory of regional economic growth studies the driving factors and mechanisms of regional economic growth. It pays attention to the influence of regional innovation, technological progress and capital accumulation on economic growth, and explores policies and measures to promote regional economic growth.

Five, the theory of regional economic policy

The theory of regional economic policy studies the role and policy tools of the government in regional economic development. The focus is on how the government can promote regional economic development and improve regional competitiveness through industrial policies, regional planning and infrastructure construction.

The development course of regional economics.

First, before the reform and opening up

In the 28 years before the reform and opening-up in New China, there was no independent regional economic department in China, which was mainly based on economic geography. The development of China's economic geography began in 1950s and was influenced by the Soviet Union.

During this period, Professor Sun Jingzhi, an economic geographer, conducted research on economic geography in Renmin University of China and compiled Lectures on Economic Geography, which laid the foundation for the development of economic geography in China.

Second, after the reform and opening up.

After the reform and opening up, China regional economics began to develop independently and gradually formed its own theoretical system. The development of modern regional economics in China can be traced back to the study of industrial layout, and then a series of theories and methods such as regional economic growth theory and regional competitiveness theory gradually emerged.

The development of regional economics in China has also been influenced by academic exchanges and policy practices at home and abroad, and gradually formed a theoretical system and research methods with China characteristics.