In Japan, natural disasters occur frequently. Natural disasters like earthquakes and tsunami wield serious influence on human life and property. However, it is difficult to predict when a natural disaster will occur. Moreover, there are few inhabitable areas in Japan which are not subject to various natural disasters.
Therefore, we must establish community improvements which enable environmental coexistence with natural disasters. In this paper, we will consider the role of regional co-existence of the environment with natural disasters, such as the Great East Japan Earthquake.