Study On The Characteristics Of The Spatial Distribution Of Agglomeration Logistics Demand

With the rapid development of the economic, the urban morphology has been expending from a single and separation city to a wider urban area morphology. Some cities, which are geographical proximity and with closer economic ties closer, have been gathered into a urban agglomeration with the quick development of economic. The urban agglomeration has become a new basic geographic unit to participate in the global competition and the international division of labor for a country. In the process of urban agglomeration forming and developing, it is therefore tremendously significant to plan and establish a scientific and rational modern logistics system adapt to urban agglomeration construction and development, for the meaning of enhancing and improving the quality and the environment of economic operation, or promoting economic health and orderly development of urban agglomeration. It is an important basic job that research and grasp the logistics demand, size, structure, levels, distribution and development trend of urban agglomeration for seting up a modern logistics system of urban agglomeration, also it has high theoretical value and practical significance for in-depth study of the spatial distribution of urban agglomeration logistics demand characteristics.The research of the spatial distribution of urban agglomeration logistics demand characteristics includes the spatial distribution relations of the logistics demand characteristics, the interaction relationship and network structure of the single city in the urban agglomeration. This thesis focuses on the related research issues as the followings.(1) Research on basic theory of urban agglomeration logistics demandThis research begins from the analysis of the structure, characteristics and influences factors of logistics demand, then carries out the research on spatial distribution composition, characteristics, formation mechanism and influencing factors of urban agglomeration logistics demand. After that, by using gray correlation analysis method, the paper solves the logistics demand associated volume. Through the definition of logistics demand correlation degree and logistics demand associated volume of node cities, the paper advances a method to analyze the spatial distribution law of urban Agglomeration logistics demand.(2) Research on location characteristics of logistics The paper analyzes the existence objectivity of logistics location theory by location theory, traffic location theory, and economic location theory. The paper also furthers the research deeply on the location characteristics, location conditions, and location factors of logistics. As the result, the paper proposes the three major elements of logistics location structure, such as logistics location point, logistics location line and logistics location circle. Through the analysis of the logistics location condition, the paper demonstrates that the logistics demand with the characteristics of the logistics location factors and the logistics demand conditions are the determinants of the logistics location.(3) Research on spatial interaction theory of urban agglomeration logistics demandBy regional economic theory and methods, the paper analyzes the conditions and the basic types of logistics demand spatial interaction. Through the definition of the relevant factors of spatial economic contact, the paper studies the pattern of logistics demand of spatial interaction. On these bases, the paper builds the static model and dynamic model for spatial interaction of urban agglomeration logistics demand.(4) Research on spatial structure characteristic of urban agglomeration logistics demandThe paper analyzes the basic concepts, constituent elements, distribution patterns of urban agglomeration logistics demand spatial interaction. By building a mathematical model based on city-size distribution theory, fractal theory and allometric growth theory, the paper studies the spatial structure and distribution patterns of logistics demand. Finally, the Yangtze River Delta urban agglomeration is taken as an example to verify the characteristic of spatial structure and distribution patterns of urban agglomeration logistics demand.(5) Research on network architecture characteristic of urban agglomeration logistics demandThe paper mainly studies on the characteristics of urban agglomeration logistics demand trends. The paper proposed the three key factors, including points, lines, nets of network architecture characteristic of urban agglomeration logistics demand,which the paper also put forward the indicators to measure it. Base on the result, the paper set up mathematical models of network architecture entropy of urban agglomeration logistics demand and corresponding computational method.The Yangtze River Delta urban agglomeration demonstrate is taken as an example to analyze the trends and influencing factors of network architecture entropy in the past20 years. The example verifies that the network structure entropy theory andcomputational method are effective in research on network architecture of logisticsdemand.