Abstract
The soil erosion at farmland becomes serious impact on the ecosystem in the coral reef in Okinawa district. In order to solve these problems, it is necessary to build a support system for the integration of the measures in a river basin. This paper examines the approach of watershed management for thesupport system as follows, 1) the role and the collaboration in various stakeholder, 2) the requirements of building watershed management, 3) the image of watershed management in Ishigaki island, and 4) the fund system for environmental preservation.
