Abstract
In order to encourage conservation and rehabilitation of the coral reef ecosystem in Yaeyama district in crisis, it is necessary to improve suitable environmental conditions in the sea for coral habitats. The application of environmental certification to encourage improvement of business activities such as agriculture, fishery, and tourism industry to reduce the impacts for coral reef ecosystems was focused. In this paper, the correlation structure of stakeholders and the applicability of environmental certification to encourage improvement of business activities were analyzed by the interviews with stakeholders related to coral reef ecosystem in Yaeyama district. As a result, applicability was found in meat cattle stock raising, sugar cane cultivation, pineapple cultivation, fishery, tourism industry, etc.