Effect analysis on Arctic indigenous societies from the global warming with the interdisciplinary approach to the micro-environment history

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In the Arctic where a high index of the global warming was seen in in comparison with a middle-low degree zone, the influence of the climate change to the indigenous socio-cultural system was analyzed based on the information of the recent environment history. From the case study of the inland river basin (Lena River), the high humidity is sensed in the region which affected the frequency and larger scale of spring ice-melted floods, snow-melted floods, and summer rain floods increased. The latter two floods brought a crisis for local live stock farming occupation which only had formed as an adaptation to the spring ice-melted flood. On the other hand, from the case study of coastal region (the Alaska coast) which is sensed as a trend of draught the indigenous communities does not intensively use the low land and the flood plain, which resulted no serious damage occurred. The focus on the micro-environment is the clue for the method of the climate change and global society.