1976-2016年青藏高原地区通达性空间格局演变
高兴川,曹小曙,李涛,吕敏娟

Evolution of accessibility spatial pattern of the Qinghai-Tibet Plateau in 1976-2016
GAO Xingchuan,CAO Xiaoshu,LI Tao,LV Minjuan
图8 1976-2016年青藏高原地区县城交通圈空间格局演变
Fig. 8 Traffic circle structure evolution of county within land transportation network in the Qinghai-Tibet Plateau in 1976-2016