青藏高原区域粮食储备规模测算与粮库空间选址研究
段健, 王维婷, 陈静, 付慧娟, 施凡基

Scales and spatial distribution patterns of grain reserves on the Qinghai-Tibet Plateau
DUAN Jian, WANG Weiting, CHEN Jing, FU Huijuan, SHI Fanji
图6 区域距离邻近三级节点的最短时间成本分布
Fig.6 Distribution of minimum time-distance costs to the third-level nodes