Permafrost conditions over Heihe River Basin in Qilian Mountains of Western China

Bin Cao1, Tingjun Zhang1, Xiankai Zhang1, Xiaoqing Peng2, Kang Wang3, Hong Guo1, Lei Zheng4, Qingfeng Wang5, Xudong Wan2, Cuicui Mu2, Jichun Wu6, Huijun Jin7 and Ruixia He8, (1)LZU Lanzhou University, Key Laboratory of Western China's Environmental Systems(Ministry of Education), College of Earth and Environmental Sciences, Lanzhou, China, (2)LZU Lanzhou University, Key Laboratory of Western China's Environmental Systems(Ministry of Education), College of Earth and Environment Sciences, Lanzhou, China, (3)University of Colorado Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (4)Wuhan University, Chinese Antarctic Center of Surveying and Mapping, Wuhan, China, (5)Chinese Academy of Sciences, State Key Laboratory of Frozen, Cold and Arid Regions Environmental and Engineering Research Institute Soil Engineering, Lanzhou, China, (6)Nanjing University, Nanjing, China, (7)Chinese Academy of Sciences, State Key Laboratory of Frozen, Cold and Arid Regions Environmental and Engineering Research Institute Soil Engineering, Beijing, China, (8)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, State Key Laboratory of Frozen Soils Engineering, Lanzhou, China