Whether Population Mobility Reshapes China's Population Pattern

Cities are not only magnets to attract capital and talents,but also employment centers and life centers.From the national scale,the population distribution in China is still more in the east than in the west,with stability,but small changes have taken place on a small scale,which is related to the large-scale floating population in our country.In the period of low birth rate and low mortality rate,the mechanical change of population instead of birth and death has become the main factor leading the change of population pattern.Under this background,it is of practical significance to explore the population pattern,population mobility and its influence on the population pattern,to guide the rational flow of population and to formulate policies related to population mobility.The main findings of the study are as follows:(1)the growth rate of urban resident population weakens;the number of cities with low growth rate increases and distributes one after another;the negative growth rate shifts.The increase of resident population decreased significantly,and the population growth slowed down;the negative growth areas also shifted;there were significant differences in population size among different regions,and the proportion of population agglomeration areas decreased.On the whole,the population density shows an increasing trend,the rapidly increasing type has changed slightly,the slow increasing type has increased and distributed continuously,the slow decreasing type has displacement,and the rapidly decreasing type has decreased height;there are significant differences in population density in different regions and the change is obvious.(2)the net population flow shows the characteristics of "stable" and "slight change".The growth of net population inflow is slow,while that of a few cities decreases rather than increases;the extent of net population outflow weakens,and backflow appears.The floating population of high-grade cities prefer "long-distance",while the low-grade prefer "short-distance";the proportion of population outflow from the province increases;the trend of agglomeration of outflow from major provinces decreases.(3)The growth of resident population is more corresponding to the net inflow of population;the growth of registered population is more corresponding to the net outflow of population.Since 2000,there is a higher correlation between population mechanical growth and resident population growth,and it is outstanding in high-level cities,that is,population migrants make a greater contribution to the population pattern,which shapes the population pattern to a certain extent.(4)When the floating population chooses the place of inflow,the income level and employment rate are the main factors that affect the inflow of the floating population;the upgrading of the industrial structure is closely related to the population mobility,which also attracts the inflow of the population;at the same time,the convenience of transportation and the level of education are also included in the consideration of the choice of the place of inflow of the floating population.However,the rise of urban housing prices will restrain the inflow of the population to a certain extent.