Analysis Of The Coupling Relationship Between Population And Industry In Beijing During The Period Of Transition And Development

The rapid urbanization of population has put great pressure on the social resources and environment of Beijing.At present,Beijing city regulates its population by industry disconnection leading to population disconnection,but the spatial distribution of population and industry is not balanced and the coupling degree is low.In view of this problem,based on the data of population and Industry in Beijing from 2005 to 2017,land use data,night light data,vegetation data,road data and points of interest data,night light index was revised by vegetation index,and the data of roads and points of interest are used to modify the land use data,to construct the spatial model of population and Industry,and to make use of the methods of geographical concentration degree,inconsistent index,coupling index and spatial autocorrelation,this paper analyzes the coupling relationship between population and industrial density,spatial distribution and spatial agglomeration,and probes into the factors influencing the change of population and industrial.The conclusions are as follows:.Firstly,the population of Beijing has decreased and the industry has developed highly from 2005 to 2017.The population of Beijing has shown a trend of fast and slow growth at first,the population of the urban core area has been moving out continuously in recent years,and the urbanization rate has been increasing,the decrease in population density after 2015 is mainly in the six districts of tertiary sector of the economy,where the working population and output value are dominant.In recent years,the status of scientific research and technical services and geological prospecting industry has increased significantly.Secondly,although the spatial difference of Population and Industry in Beijing is obvious,the coupling agglomeration is gradually strengthening from 2005 to 2017.The geographical concentration degree of population and industry is high in the urban central area,and there are big differences in numerical value between the districts and counties,the area with the same spatial distribution of the two is increasing,the gap between population and industry is narrowing,the coupling degree between population and industry is still not high,but there is a high spatial autocorrelation between them.Lastly,from 2012 to 2017,the spatial distribution of population and industry in Beijing was unbalanced,the population decreased in the urban center,and the spatial difference of industrial GDP was increasing,the input data of spatial model was further revised,it can improve the precision of spatial data set of population and industry.from 2012 to 2017,the spatial imbalance of population and Industry spatialization data set was "inner dense but outer sparse".The population density is decreasing,which shows that the decrease in population within the third ring road accounts for 90%of the total decrease in population.The increase of population density mainly occurred in the areas of the sixth district of the city and the border area of the suburb.Industrial density is on the rise,as shown in the three road within the rapid development,the rest of the region did not change significantly.