长江上游沱沱河源区多年冻土发育特征
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Characteristics of permafrost in Tuotuo River source area of upper Yangtze River
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图1. 研究区、钻孔分布与冻土研究剖面线(其中W-E-1和W-E-2为东-西冻土研究剖面线;S-N-1和S-N-2为南-北冻土研究剖面线) |
Fig. 1. Study area, borehole distribution and frozen soil research profile (W-E-1 and W-E-2 are east-west frozen soil research profile lines; S-N-1 and S-N-2 are the south-north frozen soil research profile lines) |
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