Abstract
This research is for the best use and comprehensive management of Tokyo bay based on the social and economical aspects to evaluate the economic value of ecosystem services. The ecosystem in Tokyo Bay is providing various services such as the provision of breeding or nursery function of many important marine species for commercial fishing, water purification, and the fields of recreation and environmental education etc. Those economic values were evaluated as several ten billion yen or more every year. It is necessary to consider the function and the value of such a variety of ecosystem services for the development in Tokyo Bay in the future and the plan of the utilization plan.
