Study on the Coupling and Coordination Degree of High-Quality Economic Development and Ecological Environmet in Beijing-Tianjin-Hebei Region

With the rapid development of urbanization and industrialization in China, the issue of high-quality economic development and ecological environment has arisen. Taking the Beijing-Tianjin-Hebei region as the research subject, this paper measured the comprehensive scores of economic development and ecological environment, and analyzed the coupling degree of these two systems from 2000 to 2018. According to the four degrees of coupling and coordination, this paper defined the degree of coupling and coordination between the economic development and ecological environment in Beijing-Tianjin-Hebei region, and put forward some policy suggestions. The result shows that, between 2000 and 2018, (1) the coupling degree of economic development and ecological environment in Beijing-Tianjin-Hebei region is C [0.2, 1], which is changing with time, and has gone through all stages of coupling; the coordination degree of economic development and ecological environment in Beijing-Tianjin-Hebei region is D [0.1, 0.5], which is in the low-middle stage. (2) The coupling degree of economic development and ecological environment in Beijing-Tianjin-Hebei region shows a trend of increasing first and then decreasing, while the coordination degree shows a rising trend, and remains more or less flat compared to the coupling degree.