Permafrost on the Qinghai-tibet Plateau under a Changing Climate

查看全文 作　　者：JIN Huijun;CHENG Guodong;LI Xin;LI Shuxun Observatory and Research Station of the Qinghai-Tibet Plateau. State Key Laboratory of Frozen Soil Engineering, LIGG, CAS, Lanzhou 730000 CHINA. 出　　处：《Chinese Science Bulletin》索引1999年第44卷第S1期,共7页 基　　金：This research was supported by Program No. KZ951-A1-204-03,Program No. Kj-b-2-201 and No. KZ952-S1-215 摘　　要：Permafrost on the Qinghai-Tibet Plateau (QTP) has experienced major shifts during theQuaternary. During the past 40 years, permafrost has been degrading extensively, due to climaticwarming. Simulations suggest significant degradation of permafrost both in extent and inthickness within the next 50-100 years. Freshwater wetlands on the QTP can contributesignificantly to the global budgets in the atmospheric greenhouse gases. Permafrost degradationon the QTP has caused destabilization of foundations of engineering structures, deterioration ofgrasslands and meadows, and weakening of permafrost control on water resources. 关 键 词：PERMAFROST Active layer CLIMATIC changes GREENHOUSE GASES Environmental impacts