Abstract: Cultural ecology,albeit a relatively stable system,is the prerequisite for the sustainable development of national culture.In the alternation between long-term balance and short-term imbalance,a culture,through continuousaccommodation or adaptation to the new national habitats,coordinates with the external environment,restores the balance of cultural ecology and realizes its stable continuation and development in the new round of balance cycle.In this regard,the Yanglan case in Hunan province provides some of empirical descriptions.

Key words: Dong Minority, cultural ecology, cultural imbalance, cultural reconstruction, cultural adaptation, Yanglan Dong village