Degradation of Permafrost in the Da and Xiao Hinggan Mountains,Northeast China,and Preliminary Assessment of Its Trend
JIN Hui-jun, YU Shao-peng, GUO Dong-xin, LÜ Lan-zhi, LI Ying-wu
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2006, (4): 467 -476 .  DOI: 10.7522/j.issn.1000-0240.2006.0068