东北地区冬半年积雪与气温对冻土的影响
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Influence of snow and temperature on the depth of frozen soil in winter half year in Northeast China
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图2. 1964—2017年东北地区冬半年平均最大冻土深度(a)、平均最大积雪深度(b)、平均气温(c)、地表平均气温(d)、负积温(e)、降水量(f)年际变化 |
Fig.2. Interannual variation of average maximum frozen soil depth (a), average maximum snow depth (b), average temperature (c), average surface temperature (d), negative accumulated temperature (e), precipitation (f) in winter half year in Northeast China from 1964 to 2017 |
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