冻土解冻殃及寒带森林王英斌编译研究人员的一项调查结果表明，近２０年来，由于全球气温的上升和暖冬的影响，覆盖于美国阿拉斯加州和加拿大西部北极圈内的永久冻土开始解冻。融解后的冻土带不仅出现滑坡、路面塌陷等灾害，而且还殃及到这里生长的寒带林。冻土解冻后形成... Permafrost Frost Impacts Fringe Forests By Wang Yingbin Compilers According to a survey compiled by researchers in the past 20 years, the permafrost covered in the Arctic Circle of Alaska and Western Canada began to thaw in the past 20 years due to the global warming and warm winter. The melted tundra not only shows landslides and pavement collapse, but also affects the boreal forest where it grows. Frozen soil after thawing formed ...