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11 冻土厚度年倾向率空间分布图
Fig. 11 Spatial distribution of annual variation trends of permafrost thickness