摘要：Arctic wetlands are an important geoecosystem in an arid and cold tundra environment of polar oasis on the high-latitude of northern hemisphere (Kostrzewski et al. 2006a),which over the past few years have been subjected to significant environmen- tal changes. Global climate changes have contrib- uted to the significant development of wetlands in areas of glacial retreat and where the deeper sum- mer thawing of permafrost has taken place. How- ever,at the same time the patchy wetlands with a small area tend to disappear as a result of the grad- ual degradation of the permafrost (Woo & Young 2006,Kostrzewski et al. 2006b). High-arctic lakes are prevalent and highly sensitive types of polar wetlands affected by climate change and variations of geomorphic processes (Yoshikawa,Hinzman,2003).
