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1 研究区冻结期风向频率
Fig.1 Rose graphs of frequency of wind direction during freezing period in Lingwu (a) and Yanchi (b)