メタゲーム論的思考によるメタン発酵消化液の液肥利用普及シナリオの記述と課題抽出

Abstract

The establishment of recycling society is an important policy concern, and community development aiming at resource circulation in rural areas is necessary. Although the cooperation of many subjects is indispensable to resource circulation, various conflicts have arisen among related subjects because of differences in their interests and increase in the amount of work. But few studies describe conflicts among stakeholders and deduce the problems faced in promotion of environment-conscious resources to smoothly build a consensus. In this study, we selected Yagi-cho, Nantan-city, Kyoto prefecture as the study area and used meta-game analysis to examine the mechanism of conflict that occurred among farmhouses or the consumers during the promotion of the use of liquid fertilizer by the local government. For this analysis, we traced the process of interaction and past conflicts caused by a discrepancy in each subject's intention and regarded this as the present phase. Then, we considered some scenarios derived from the combination of strategy options available to each subject and some issues to solve for inducing an ideal future scenario. The results indicate that the most pressing problem after developing cooperative behaviour of livestock farmhouses by following a conviction of the administrative authorities was involving field husbandry farmhouses into the collaboration cycle. However, under the condition of uncertainty about consumers' demand for agricultural products made using liquid fertilizer, this was difficult to achieve because of the discrepancy in preference order in each scenario. Conversely, it is possible that as long as the local government and other subjects cooperate and improve the motivation of field husbandry farmhouses, the use of liquid fertilizers can spread rapidly. Although the analytical method used in this study needs improvement, the results of this study illustrated the validity of the application of meta-game analysis to solve the conflict.