机译:Observational study on the active layer freeze-thaw cycle in the upper reaches of the Heihe River of the north-eastern Qinghai-Tibet Plateau
Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China;
Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, 222 Tianshui South Rd, Lanzhou 730000, Gansu, Peoples R China;
Alpine permafrost regions; Active layer; Seasonal freeze-thaw cycle; Local factors; Upper reaches of the Heihe River (URHHR); Qilian Mountains;