In the conservation and management of natural landscapes, it is expected that private organizations and citizens will actively participate in the promotion of park management in collaboration with various actors. This study conducted a questionnaire survey on Aso Greenstock, the first "national park management organization," regarding the number of years of activity, motivation of activities, place attachment, satisfaction with the organization, intention to continue activities, constraints on activities, and necessary measures. The multiple regression analysis was used to analyze the factors related to the continuation of activities and the factors related to the constraints that make it difficult to continue activities. As a result, it was considered that the factors for the continuation of activities were related to the attachment to Aso green stock and grasslands, and the sharing of the joy of supporting maintenance activities with colleagues. The factors for the continuation of the activities involved the attachment to Aso green stock and grasslands and the sharing of the joy of supporting maintenance activities with colleagues. The limiting factor for activities was "anxiety about physical fitness."
