The ice-free areas in circum Antarctica appear with the climate becoming warm and the ice sheet retreating ,which are the ideal sites to study on the environmental evolutional history in Antarctica ,even on the global environmental change.

• 环南极洲无冰区就是随着气候变暖、冰川后退而出现 ,是研究南极乃至全球的自然环境演化历史的理想场所。