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9 1976-2016年青藏高原地区县城交通圈面积比例与覆盖乡镇数量

Fig. 9 Area proportion and the covered towns of traffic circles of all counties in the Qinghai-Tibet Plateau in 1976-2016