东北地区冬半年积雪与气温对冻土的影响
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周晓宇 1( ), 赵春雨 1( ), 李娜 2, 刘鸣彦 1, 崔妍 1, 敖雪 1
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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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Xiaoyu ZHOU 1( ), Chunyu ZHAO 1( ), Na LI 2, Mingyan LIU 1, Yan CUI 1, Xue AO 1
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图11. 1964—2017年东北地区冬半年地表平均气温(a)、平均气温(b)、负积温变化(c)对最大冻土深度的影响(“+”为通过0.05信度检验的站点)
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Fig.11. Effects of variations of surface average temperature (a), average temperature (b) and negative accumulated temperature (c) on the maximum frozen soil depth in Northeast China in the winter half year from 1964 to 2017 (+ denotes the trend significant at the 95% confidence level)
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