COUNTY COMMERCIAL LAYOUT AND MECHANISM RESEARCH BASED ON GIS SPATIAL STATISTICS——A CASE STUDY OF QIAN'AN COUNTY IN JILIN PROVINCE
以吉林省乾安县为例，利用区域购物流模型和GIS热点分析，研究县域商业布局的两种模式（功能布局和圈层布局），并揭示其叠加形成的可变圈层布局结构及影响因素。
With the rapid development of urbanization,the urban commercial layout innovation becomes one of principal aspects of urban spatial variation.And because of the influence of urban space expands and new multiple factors,the urban commercial layout emerged new features which based on the traditional but not all same with it.In this paper,Small-scale region is chosen as a object of study.The model of regional shopping flow and GIS hot spot analysis are used to study county seat commercial allocation.The author suggests that there are two basic commercial allocations in country seat.,one is Functions layout mode which is characterized by regional shopping flow intensity,and another is Circle layout mode which is calculated by G value of shopping flow intensity.If these two layout mode were superposed,there would be a variable circle layout mode which emerges several cores functions and traffic spatial variate.In variable circle layout mode,the commercial layout of country seat is divided five circles and two funcion cores.In each circle,the phenomenon of commercial spatial gathering transport axis is obvious.Futher researchs indicate that some actors,such as maket,traffic location,spatial differences in comsumptiond and social relevance,are obviously affect commercial layout in small-scale region.