Social Sustainable Development of Population Agglomeration and Pollution Emission in Urban China: A Case Study of Beijing and Shanghai

Because of the superior condition in the China's big cities, a lot of labors were attracted to enter, which caused a lot of hidden trouble for the city. This paper builds the coupling coordination model to explore the interactional relationship between the population agglomeration, the environment and social economic factors based the data of Beijing and Shanghai from 2000 to 2012. With the empirical research on the present situation of coordinated development of population agglomeration, environment and social economy system, this paper discusses the key factors of sustainable development. The results show that the coordination degree of two cities is weak and tend to verge disorders. The key factors that affect the coordination degree of the two cities are different. This paper provides some policy suggestions for the sustainable development of each city.