[1] Zhang X, Nan Z, Wu J, et al. Mountain permafrost distribution modeling using the Multivariate Adaptive Regression Spline (MARS) in the Wenquan area over the Qinghai-Tibet plateau[J]. Science in Cold and Arid Regions. 2012, 4(5): 361—370.

[1] Huang P, Nan Z, Zhao L.Permafrost distribution simulation over the Qinghai-Tibet plateau with the extended surface frost number model[C]//Research Monograph of Cold and Arid Regions Engineering and Environment: A Collection of the Papers Dedicated to the 70th Birthday of Academician CHENG Guodong.Lanzhou:Lanzhou University Press,2012:240—252.[黄培培，南卓铜，赵林.利用扩展的地面冻结数模型模拟青藏高原冻土分布[C]//寒旱区工程与环境研究——程国栋院士七十华诞学术研讨会文集.兰州:兰州大学出版社,2012:240—252.]
[2] Li X, Ran Y, Nan Z, et al.A Frozen Ground Distribution Map of China by Integrating Existing Permafrost Maps and Modeling Results[C]//Research Monograph of Cold and Arid Regions Engineering and Environment: A Collection of the Papers Dedicated to the 70th Birthday of Academician CHENG Guodong.Lanzhou:Lanzhou University Press,2012:229—239.[李新，冉有华，南卓铜，等.一个融合了我国现有冻土图和模型模拟结果的中国冻土分布图[C]//寒旱区工程与环境研究——程国栋院士七十华诞学术研讨会文集.兰州:兰州大学出版社,2012:229—239.]

frostnum_qtp (pdf)

lixin_perm.pdf (pdf)