Abstract
National parks in U. S. A. are kept by USDI National Park Service and many people who take part in the volunteer activities every year. Volunteer activities are managed by the USDI National Park Service and many cooporative associations. The volunteers are doing activities making a choice among many kinds of activities. They are supported by USDI National Park Service with food,clothing,and shelter and securities for the activities. The volunteers are increasing year by year. However.the programs had to reduce of scale and decline of qualities by the infruence of budget cut in National Park System, under the Clinton Administration's reconstruction of finance. Under this situation the cooporative associations, supporting for national parks, have forced to be active in their association and extend of it to keep the programs. And thus, the cooporative associations has come to take more part of management of national parks. This paper made clear the progress of cooporative associations, and paid attention to relationships between the USDI National Park Service and the cooporative associations (NPO) supported by individual and enterprises, based on the survey materials about the volunteer in parks systems made by USDI National Park Service and the cooporative associations.
