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4 1976-2016年青藏高原地区县城平均最短可达时间 |
Fig. 4 Average minimum accessible time among counties in the Qinghai-Tibet Plateau in 1976-2016 |
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