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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9. 1990—2014年东北地区NDVI的年际变化

Fig. 9. Interannual variation of NDVI in Northeast China from 1990 to 2014