The city of Incheon has selected Deokjeok-do Island as a zero-carbon demonstration area using only renewable energy for promotion of Deokjeok-do Eco-Island project. Deokjeok-do Island boasts of having rich ecological resources as well as cultural ones, and attracts many tourists to the island. However, Deokjeok-do Eco-Island project has its limits in building housing and infrastructure with the use of renewable energy. In this regard, there is a need to propose a policy for sustainable tourism through a linkage of Deokjeok-do Eco-Island project with the island's tourism industry. For environmentally sustainable tourism, it is necessary to build a Deokjeok-do Eco-Island experience center and develop eco-friendly tourism programs for the prevention of the ecosystem in principle. For economically sustainable tourism, the city should operate an electric bicycle rental business and fair travel agencies based on the efficiency of local economy. For socially sustainable tourism, it needs to operate the consultative council of local residents and establish a public-private-academic network based on the equity of the community.

This paper is based on the records of Jeju’s migration in the former half of the 20th Century which can be said to be a tumultuous time in Korea’s history both internally and externally. It aims to go over the background and significance of the migration. With the effort, it intends to find some evidences that may lead into reevaluating our awareness and attitude towards the Jeju Japanese as to why the Jeju people migrated to Japan during those times. What made the JeJu people go to Japan and what made it possible for them to cross over? Three main reasons were deducted from this investigation. First of all, the Jeju people’s migration to Japan was a direct result of the ‘land investigation project’ which was one of the most representative Japanese colonization policy. Secondly, we could take the direct transportation factor which made it possible for the population leak of Jeju into account. The regular passenger liner between Osaka and Japan called the Kimikayomaru(君代丸) was set up. Such launching of passenger liners is also intimately connected with the change in the labor market followed by industrialization within Japan. Finally, we could take the unique characteristics of the Jeju people’s cultural community into consideration. While other Korean Japanese from other regions form relationships by forming organizations from a province, city or county, the people from Jeju formed relationships according to villages and identified themselves with their own region.

bakkat muljil conducted by the Jeju haenyo has a lot of implications as they expanded the activities to Asian countries and propagated their unique cultures. Until the early period of the Jeju haenyo starting the bakkat muljil, there had been no similar people who tried to harvest the marine product from the bottom of the sea in mainland Korea, some parts and islands in Japan, China and Russia with the naked body without any special tools as Jeju haenyo did. Not until the Jeju haenyo went there and started the diving job there did they live in those places and learned the skill. The efficient operation system (jamsugye system), adoption of “no harvesting period” system and the profit sharing through joint work of Jeju haenyo have been adopted. Jeju haenyo has especially propagated the knowledge on how to cope offshore. The effectively used it to their advantages, changed the local economy as well as accumulated their individual wealth through the job and expanded the new living scope to the sea. They also made a critical influence on the positive female participation in the job market.

very important also for future generations in managing and inheriting CPR. A study was conducted on the CPR case of the village fishery managed by the Jongdal-ri Fishing Village Cooperative of Jeju Special Self-governing Province. The eight principles presented by Ostrom (1990) as the designed principles of sustainable CPR, that is to say, Clearly defined boundaries, Congruence between appropriation and provision rules and local conditions, Collective-choice arrangements, Monitoring, Graduated sanctions, Conflict-resolution mechanisms, Minimal recognition of rights to organize, and Nested enterprises, were analyzed. It was confirmed that the object case, Jongdal-ri Fishing Village Cooperative was managed based on these principles. Autonomous management rules are established by each fishing village cooperative community to fit their respective characteristics. Besides mere establishment of the rules, these rules should be preferentially be put into practice. The Jongdal-ri Fishing Village Cooperative successfully put them into practice, and was designated as the most superior fishing village cooperative community successively for three years. Collection was prohibited during a closed season for preservation of resources, and those of which the body length was shorter than that specified in the rules were not caught. That is to say, communities can sustainably manage CPR by complying with the conditions to be sustainable as well as following and putting in practice the rules, providing a CPR management system for future generations.