近50年来黑龙江省冻土厚度的时空变化特征
王宁, 臧淑英, 张丽娟
Spatial and temporal variations of spermafrost thickness in Heilongjiang province in recent years
Ning WANG, Shuying ZANG, Lijuan ZHANG
图4
冻土厚度年代变化图
Fig. 4
Periodic permafrost thickness variation