行政区域界线是指相邻的行政区域之间的分界线,其标志可以是山脉、河流等自然物,也可以是界桩、界石、界墙、沟渠、道路、运河等人造物。行政区域界线的类型一般可以分为三种:一是习惯线,是行政区域之间自然形成的、毗邻双方共同承认和遵守的边界线;二是法定线,是经过相邻地方政府协商、订立划界协议和实地勘测划定的边界线;三是争议线,尚处于带状,并未完全划分清楚或者相邻地方政府之间还存在争议的边界线。民 Administrative boundaries refer to the dividing line between adjacent administrative regions. The signs may be natural things such as mountains and rivers, and may also be artifacts such as boundary pillars, boundary stones, boundary walls, ditches, roads and canals. The types of administrative boundary can generally be divided into three types: First, the customary line is the natural formation between the administrative regions, adjacent to both sides recognize and comply with the boundary line; the second is the legal line, is through the consultation of neighboring local governments, concluded Border demarcation agreement and field survey and demarcation of the boundary line; third is the controversial line, is still in the strip, not completely clear or adjacent to the controversial border between local governments. people