State Key Laboratory of Frozen Soils Engineering Northwest Institute of Eco-Environment and Resources Chinese Academy of Science Lanzhou 730000 China;
State Key Laboratory of Frozen Soils Engineering Northwest Institute of Eco-Environment and Resources Chinese Academy of Science Lanzhou 730000 China;
China Meteorological Administration Training Centre Beijing 100081 China;
State Key Laboratory of Frozen Soils Engineering Northwest Institute of Eco-Environment and Resources Chinese Academy of Science Lanzhou 730000 China;
Gansu Province Transportation Planning Survey&Design Institute Limited Liability Company Lanzhou 730000 China;
Northeast China; Climate warming; Permafrost degradation; Impact of environmental factors;