Abstract
In this research, generalization of environmental evaluation was investigated in order to conserve hilly and mountainous areas as a case study of 4 towns and villages in C-county, Nagano prefecture. A synthetic evaluation expressing functions of national land conservation was constructed by means of geographic information system. A synthetic evaluation expressing degree of synthetic satisfaction to environment of settlement by residents' opinions was derived by the use of a questionnaire survey. Generalization of two synthetic evaluations as a unit of settlement was constructed. It is considered that this is an index expressing sound condition of hilly and mountainous areas.