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4 流动沙丘不同地貌部位冻结层厚度与平均气温的关系图 注：气温数据为观测日前32 h（丘顶）的平均气温与前15 d（背风坡中和背风坡脚）的平均气温

Fig.4 The relationship between the average air temperature and frozen depth for various geomorphic sites on a mobile dune