Abstract
The purpose of this paper is to study the impact of environmental change to Japanese industries and to clarify the change-pattern of the activities. To analyze them, the activity is regarded as the input-output system : the former consists of capital asset and employee, the latter of value-added. The DEA method is employed to analyze them. We use not only the term of nominal value, but also of real value. The result of this study may be used effectively as the management information.
