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近代云南口岸腹地格局的确立大致经过了四个阶段。腹地是口岸发展的必要条件,是口岸赖以发展的物质基础,腹地的大小在很大程度上反映了口岸的吸引力和辐射力。近代云南三关腹地格局的演变反映的是三关贸易地位在空间上的形成过程。
The establishment of the hinterland pattern in modern Yunnan roughly goes through four stages. The hinterland is a necessary condition for port development and a material basis for port development. The size of hinterland largely reflects port attraction and radiation. The evolution of the pattern of the hinterland of San-Guan in modern Yunnan reflects the spatial formation of the trade status of San Guan.