1. Wang S L. Discussions on the formation and evolution of permafrost on the Qinghai-Tibet Plateau since the Late Pleistocene. J Glaciol Geocryol (in Chinese), 1989, 11(1): 67–75
2. Zhou Y W, Guo D X, Qiu G Q, et al. Permafrost in China (in Chinese). Beijing: Science Press, 2000. 377–386
3. Qiu G Q, Cheng G D. Permafrost in China: past and present. Pf & Periglac Proc, 1995, 6(1): 3–14
4. Cheng G D, Wang S L. Discussions on the zonation of altitudinal permafrost in China. J Glaciol Geocryol (in Chinese), 1982, 4(2): 1–17
5. Jin H J, Li S X, Wang S L, et al. Impacts of climatic changes on permafrost and cold regions environments in China. Acta Geogr Sin (in Chinese), 2000, 55(2): 161–173