“边缘并非事物的结束，而是显 现事物的开端”。本文将相邻异质地 域（含地质、地貌等自然属性与用地 性质、权属等社会属性的区别）间的 交界处称为边缘区。从城镇间的分 隔带、自然生态单元与城市建设用地间的绿色交接带，到联结城市中各功能单元的街道．广场、建筑檐廊等， “The edge is not the end of things, but the beginning of things.” In this paper, the boundary between adjacent heterogeneous regions (including the difference between the natural and geologic features such as geology and landform, the nature of the land, and the social attributes such as ownership) is called the marginal zone. From the separation zone between cities and towns, the green transition zone between natural ecological units and urban construction land, to the streets connecting all functional units in the city. Square, building eaves gallery, etc.,