1. College of Agriculture, Chifeng University, Chifeng, Inner Mongolia, China
2. School of Civil Engineering, Permafrost Institute, and Northeast-China Observatory and Research-Station of Permafrost Geo-Environment-Ministry of Education, Northeast Forestry University, Harbin, People's Republic of China
3. College of Forestry and Da Xing'anling Forest Ecosystem Research Station of Inner Mongolia Autonomous Region, Inner Mongolia Agricultural University, Hohhot, People's Republic of China
4. State Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, People’s Republic of China
5. School of Civil Engineering, Shaoxing University, Shaoxing, People’s Republic of China
6. Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
7. Laboratory of General Geocryology, Melnikov Permafrost Institute, Siberia Branch, Russian Academy of Sciences, Yakutsk, Russia
8. School of Earth Science and Spatial Information Engineering, Hunan University of Science and Technology (HUST), Xiangtan, People’s Republic of China