青藏高原史前时期交流路线及其演变

侯光良, 兰措卓玛, 朱燕, 庞龙辉

Communication route and its evolution on the Qinghai-Tibet Plateau during the prehistoric time

HOU Guangliang, , ZHU Yan, PANG Longhui

图2 自然因子赋值与成本数据

Fig. 2 Valuation of natural factors and cost data