Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade
Xiaoli Chang,Huijun Jin,Ruixia He,Yanlin Zhang,Xiaoying Li,Xiaoying Jin,and Guoyu Li
Xiaoli Chang
School of Earth Science and Spatial Information Engineering, Hunan
University of Science and Technology, Xiangtan, Hunan 411201, China
State Key Laboratory of Frozen Soils Engineering, Northwest Institute
of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou
730000, China
Huijun Jin
State Key Laboratory of Frozen Soils Engineering, Northwest Institute
of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou
730000, China
School of Civil Engineering, Institute of Cold-Regions Science and
Engineering, and Northeast-China Observatory and Research-Station of
Permafrost Geo-Environment (Ministry of Education), Northeast Forestry
University, Harbin 150040, China
State Key Laboratory of Frozen Soils Engineering, Northwest Institute
of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou
730000, China
Yanlin Zhang
School of Earth Science and Spatial Information Engineering, Hunan
University of Science and Technology, Xiangtan, Hunan 411201, China
Key Laboratory of Sustainable Forest Ecosystem Management (Ministry of
Education) and College of Forestry, Northeast Forestry University, Harbin
150040, China
Xiaoying Jin
State Key Laboratory of Frozen Soils Engineering, Northwest Institute
of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou
730000, China
State Key Laboratory of Frozen Soils Engineering, Northwest Institute
of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou
730000, China
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Based on 10-year observations of ground temperatures in seven deep boreholes in Gen’he, Mangui, and Yituli’he, a wide range of mean annual ground temperatures at the depth of 20 m (−2.83 to −0.49 ℃) and that of annual maximum thawing depth (about 1.1 to 7.0 m) have been revealed. This study demonstrates that most trajectories of permafrost changes in Northeast China are ground warming and permafrost degradation, except that the shallow permafrost is cooling in Yituli’he.
Based on 10-year observations of ground temperatures in seven deep boreholes in Gen’he,...
