Research On The Spatio-temporal Evolution Of Population Structure In Northeast China And Its Optimization Countermeasures

With the seventh census and the release of its data,the attention of population issues has increased again.The existing population problem is not only reflected in the quantity,but also in the structure.Population structure is a quantitative relationship with a certain proportion and law presented by the whole population within a certain time and region.With the development of the economy,it constantly changes,and it can reflect the diverse regional,economic,social and natural characteristics of the population.Population structure is gradually becoming a problem for Northeast China,which has a significant impact on its overall revitalization.Therefore,it is imperative to study Northeast China’s population structure in order to lay the foundation for optimizing and controlling it.In this paper,population structure is the subject of research,based on the theory of population transformation and sustainable population development.In addition,the growth status and population structure trend of Northeast China were discussed,and corresponding optimization strategies were presented.Firstly,the development and change of population size,age,culture and other structures in Northeast China are analyzed from the perspective of time and space,and the grey BP neural network prediction model is used to predict them.Secondly,based on the study on the spatio-temporal evolution of population structure in Northeast China,the entropy method and Arc GIS spatial analysis method are utilized to comprehensively evaluate the development level of population structure in Northeast China and study its spatial correlation characteristics.Then,the evolution characteristics of the population structure in Northeast China are summarized,and the dynamic mechanism of its evolution is studied from both internal and external perspectives.Finally,based on the analysis of the development status,trend and dynamic mechanism of population structure in Northeast China,a countermeasure to optimize population structure in Northeast China is proposed.The following conclusions have been drawn through the study: First,the population size of the northeast region will continue to shrink,and the problems of low birthrate and aging labor force will continue to aggravate,but the gender structure will tend to be balanced,and the cultural level of the population and urbanization level will continue to increase.Second,the population structure development level of Northeast China is not high,regional differences are obvious,showing phased characteristics,and spatial random distribution characteristics,and the correlation between regions is weak.Third,the evolution of the population structure in Northeast China is driven by two internal and external mechanisms,in which population mobility,birth rate and economic factors play a crucial role.Fourth,the optimization of the population structure in Northeast China can take measures from several aspects: optimizing fertility to increase fertility,alleviating population loss,comprehensively improving population quality,continuing to promote urbanization,and actively coping with aging.This paper tries to comprehensively study a variety of population structure variables from the perspective of geography,and focuses on their spatio-temporal evolutionary process and characteristics,so as to explore the changing trend of population structure,and put forward optimization countermeasures.In this paper,the combination model is used to forecast the population number and structure,which overcomes the disadvantages of a single prediction model and improves the accuracy of the prediction result.