Yet vast floods have also been documented, both through tree-ring data and more modern historical records. Marcia K.
不过，通过树木的年轮和更多的现代历史记录，人们还是可以查到一些大洪水爆发的记录。
Record of Drought and Flood Series by Tree-Ring Data in the Middle Section of Qilian Mountain Since 904 A. D.
祁连山中部公元904年以来树木年轮记录的旱涝变化。
Record of Drought and Flood Series by Tree-Ring Data in the Middle Section of Qilian Mountain Since 904 A. D.
祁连山中部公元904年以来树木年轮记录的旱涝变化。
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