Based On GIS In The Yangtze River Economic Belt Urban System Spatial Structure Research

Along with economic development and rapid population growth,urban expansion rapidly.Central role in the development of human history,the town how play,how the structure and layout of urban space,to the state and regional comprehensive development level and development speed has important influence.In 11 provinces(municipalities)as the research scope of the Yangtze river economic belt,1999,2004,2009 and 2014 as time section,different space in the Yangtze river economic belt scale urban system status,find its rule,differences and the insufficiency.The main content of the thesis includes the following three aspects.(1)of the Yangtze river economic belt urban system development present situation analysisUsing relevant data of the Yangtze river economic belt in 2009 and 2014,from the total population,population density,urban resident population,urbanization,urban density and so on five aspects of the Yangtze river economic belt as a whole,the study area east Midwest,11 provinces(cities)in the study area three spatial dimensions to the current situation of the development of urban system were analyzed,explore its advantage and disadvantage and shortage.(2)of the Yangtze river economic belt scale level of urban system structure researchUsing Zipf rank-size distribution rule and the city's first degree index,from the Yangtze river economic belt,east Midwest region two space scale on the Yangtze river economic belt town level-scale to study the fractal characteristics and the first city,computing the fractal dimension values,on the basis of the exploration of the Yangtze river economic belt scale distribution and the first city town level.(3)of the Yangtze river economic belt urban system spatial characteristics researchJAVA program developed by the baidu API interface and Matlab software distance(short)letter number to calculate the Yangtze river economic belt in 110 cities the straight line distance between each other;According to the map of gold measure the driving distance between 110 cities and driving long distances;Using the fractal theory,the combination of access to get straight line distance between cities,transportation distance and time distance,such as data,from the Yangtze river economic belt,east Midwest region two space scale characteristics of spatial distribution of urban system in the study area and with access to study;Using gravity model,based on the population of permanent residents in the city proper,GDP and the straight line distance between the cities and other data of the interaction between the cities of the Yangtze river economic belt is analyzed,and quantitative measuring from the center of the urban system and discrete degree measuring two aspects of the urban system in the study area to study the spatial distribution measurement.Based on the results of the study,respectively from the study area as a whole,the eastern,central and western zones of different regional spatial structure of urban system and make proposals for optimization.