关键词: 南极,环境变迁,盐湖生态

Abstract:

Modern geomorphological feature of Antarctic continental margin formed in processes of globle climate changing and ice sheet retreating subsequent flooding of areas by sea water and the isostatic uplift raising since 18 000 aB.P..Ecological investigation has been done in some saline lakes in Vestfold Hills(60°38′S,78°06′E),East Antarctica.The results show that changes of natural environment and physical chemical factors,as well as the structure of biotic species and succession do occur in some lakes,due to seasons,local climate changes,environmental evolution and geographic variances in regions,which is continuing in present time.It should be regarded as importent ecological proof for studying on Antarctic and globle climate changes.