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5 冻土厚度Mann-Kendall检验图
Fig. 5 Results of the Mann-Kendall test for permafrost thickness