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8 1961—2018年春季融雪开始日期

Fig.8 Date of snowmelt in spring from 1961 to 2018