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中国东北兴安岭地区年冻融频次的分布规律
魏豪1,5(), 张泽2,1,3(), MELNIKOV Andrey4, 金豆豆1,5, 高思如1, 冯文杰1
Distribution law of annual freeze-thaw frequency in Xing’anling region of Northeast China
Hao WEI1,5(), Ze ZHANG2,1,3(), Andrey MELNIKOV4, Doudou JIN1,5, Siru GAO1, Wenjie FENG1

图4. 1990—2017年兴安岭地区年冻融频次的年际变化

Fig. 4. Interannual variation of annual freeze-thaw frequency in Xing’anling region from 1990 to 2017