九州大学大学院生物資源環境科学府農業資源経済学専攻農業関連産業組織学講座食料産業システム解析学分野
Laboratory of Food Industrial System Analysis, Division of Industrial Organization of Agribusiness, Department of Agricultural and Resource Economics, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
九州大学大学院農学研究院農業資源経済学部門農業関連産業組織学講座食料産業システム解析学分野
Laboratory of Food Industrial System Analysis, Division of Industrial Organization of Agribusiness, Department of Agricultural and Resource Economics, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院農業資源経済学部門農業関連産業組織学講座食料産業システム解析学分野
Laboratory of Food Industrial System Analysis, Division of Industrial Organization of Agribusiness, Department of Agricultural and Resource Economics, Faculty of Agriculture, Kyushu University
Kubo, Kano and Maeda (2008) which is based on the work of Kawaguchi (2003) developed a spatial equilibrium model, incorporating oligopolistic processing firms. The oligopolistic processing firms are characterized as the firm which can hold a great control over their products' Prices against the producers in raw material market and the consumers in processed goods market. In this paper, we revise the spatial equilibrium model of Kubo, Kano and Maeda (2008) by considering oligopolistic processing firms which make some processed goods from a raw material. Also, analyses simulations with the use of the model are performed under the four scenarios, 1) a perfectly competitive in both raw material market and processed goods market, 2) supply-oligopolistic in processed goods market, 3) demand-oligopolistic in raw material market, 4) both supply-oligopolistic in processed goods market and demand-oligopolistic in raw material market. As a result, the following facts are yielded: oligopolistic processing firms in this study beat the Price down in raw material market and push up the Price in processed goods, which are more profitable than Price-takers.