Population Flow Model of China´s Developed Cities Based on P-N Junction Model

In order to solve the limitation of the classical Lewis model in the analysis of the China´s developed cities´ population flow, this paper is to set up a dual structure model of population flow based on P-N junction model which is suit for the China´s developed cities. Through introducing population flow coefficient and marketization coefficient, the dual structure model of population flow based on P-N junction model can explain the population flow trend and mechanism. In order to verify the rationale, this paper will test the model by using the related data from Beijing. The results show that in the analysis process of China´s developed cities´ population flow, the prediction of this model has accuracy in some extent, which can precisely predict the population quality from urban to rural. This model can reasonably analyze the China´s population flow problems, further is used to predict the population flow trend in the China´s developed cities.