Empirical Study Of Central Urban Land Use Intensity Of Yangtze River Economic Belt

Land intensive use is the fundamental policy of ecological civilization construction in China,and it is also a strategic choice for new urbanization.The strategy of Yangtze River Economic Belt which is the new regional development of the implementation of opening up strategy,is a new round of reform and opening up in China.Yangtze River Economic Belt promotes the coordinated development of East,West and West interactive cooperation,and fully promote the opening to the outside world.It also the first demonstration zone of construction of ecological civilization.This paper studies the intensive use of land in 12 central cities of the Yangtze River Economic Belt,and analyzes the shortcomings which cause the law urban land intensive use.The traditional research method of land use intensive is mainly choose the indicators related to economic of urban land and calculate the weight of right.This paper is taken into account the environmental impact factors and government coping strategies and other multiple factors,and simulating the complexity of land factors.This study improves the traditional research methods:first,the paper change three times nonlinear interpolation instead of linear interpolation,which effectively avoids the influence of the incoherence of the interpolation data on the uncredibility caused by the training neural network.Building the models of BP neural network as much as possible to so that improving the credibility of the results effectively which get from the final calculus data.The results show that:to the overall,first,12 central cities made an intensive analysis through a period time between 2005 to 2015,and the results show that the degree of urban agglomeration is in a increasing stage which shows a gradient shape;the second,There is a positive correlation between the degree of intensive land use and the coordination degree ofDPSIR system.To the urban circle,first the cities of the Yangtze River economic belt have a positive correlation between the Urban Land Use Intensity and economic development level,and downstream cities' land intensive degree is higher than cities of up and middle reaches.Last,Shanghai as the center of the Yangtze River Delta Urban agglomeration has higher land intensive degree,and the land intensive degrees present the fan decreasing pattern taking the Shanghai as the center.