Research On Spatial System Of Frontier Trade Of The Three Towns Of Xuanfu,Datong And Shanxi In Ming Dynasty

The Great Wall is not only a cultural heritage,but also an order belt.the frontier trade plays its special role in this order.In the context of the development of frontier development and "One Belt And One Road",this paper focused on the research on Space Settlement of frontier trade of the three towns of Xuanfu,Datong and Shanxi in Ming Dynasty.The spatial system of frontier trade composed of multiple systems,in addition to the market itself,also covers the defensible space,economic and trade flow,the surrounding settlements and change,regional development and other aspects of content.The article takes the spatial arrangement of three towns frontier trade as the main line.Based on historical data,modern research results,research data and experimental data,the integrated use of GIS spatial geographic information analysis,mathematics and statistics,such as research methods,ontology analysis step by step to explore the distribution of ontology frontier trade,defense system,the influence on the three towns settlement,the influence of the north race region,so as to strengthen the understanding of the city space system.The city never just a solitary individual on the Great Wall.As a means of exchange and communication,the frontier trade influence the two parties in the transaction object,for the society it plays an important role in history.