Study on Greener Growth Efficiency of Large Cities in China in the New Normal State

To improve the level of ecological civilization construction and the quality of green development under the process of urbanization, the characteristics of urban green growth efficiency were studied. Based on the indicators of economic output, resource input and environmental emission of the 46 most representative large cities in China, the synthetic index evaluation method and the multiple correspondence analysis methods were used to analyze the greener growth efficiency characteristics of large cities in the new normal state. The results showed that the efficiency of greener growth in large cities was higher in the east and lower in the west, and higher in the south and lower in the north. Cities of higher level or larger population scale tended to be more efficient in greener growth. In terms of changes, the greener growth efficiency of the heavy industry cities in the new normal period had a smaller overall increase, and the cities in the southwest and northwest China had significantly improved their economic output, resource input and environmental emission, respectively. Based on the analysis results, it was proposed that in the process of promoting the green development of cities, formulating strategies are necessary to improve the greener growth efficiency and take differentiated green development paths according to the development characteristics of various kinds of cities, such as developed large cities, regional central cities and heavy industries dependent cities.