宁夏河东沙地沙丘冻融过程的时空差异

秦海琴, 张萍, 展秀丽, 火占华, 马娟利, 吴宏玥, 靳磊

Spatial and temporal differences of freeze-thaw processes on dunes in the East Desert of the Yellow River in Ningxia

Haiqin QIN, Ping ZHANG, Xiuli ZHAN, Zhanhua HUO, Juanli MA, Hongyue WU, Lei JIN

图3 流动沙丘各地貌部位未冻层和冻结层的深度范围 注：日期后的温度是观测日前15 d的平均气温， 折线为沙丘不同部位未冻层和冻结层的平均厚度

Fig.3 Depth ranges of unfrozen layer and frozen layer of various geomorphic sites on a mobile dune