黑龙江省土壤冻融期气象要素变化特征
王萍,赵慧颖,闫平,朱海霞,翟墨,李秀芬

Characteristics of changes of meteorological factors during freezing and thawing period in Heilongjiang Province
Ping WANG,Huiying ZHAO,Ping YAN,Haixia ZHU,Mo ZHAI,Xiufen LI
图10 1981—2018年不同层次平均土壤湿度
Fig.10 Average humidity of the soil at different levels from 1961 to 2018: 0~10 cm (a), 10~20 cm (b) and 20~30 cm (c)