The purpose of this paper is to clarify the structure and characteristics of green infra structure in the upper river basin of the Kanda River in Tokyo from the point of the historical evolution of Green and Water conservation policies, and considers the effective methodology of green infrastructure planning, towards the adaptation of the climate change. The following three points have clarified. The first is the structure of the target area has been developed based on five small watersheds. Through the implementation of various green conservation policies, the structure, namely, core, corridor, and matrix has been gradually formulated. The second is, it is important to develop precise strategies based on the characteristics of each watershed. The third is, for contributing to solve the earth problems, such as enriching bio-diversities, enlarging water permeability, and protecting cultural landscapes, to create GI map is essential, since it would create the common platform between various stakeholders., and it becomes possible to introduce the simulation towards the climate change. By creating several scenarios, we could testify the future of the region, and consider alternative futures for the adaptation of the climate change.
