Development of Spatial Equilibrium Model of International Trade under Actual Tariff Systems and Its Application to the International Market Analysis of Agricultural Products

我们将现有的“从价税与关税配额制下的国际贸易空间均衡模型”（简称SEM IT TQS SAVD）引入到完全竞争和寡头垄断的国际贸易中，得到了该模型实例问题的均衡解（参考文献[1]）。证明了SEM IT TQS SAVD中线性互补问题解的存在性，并对其算法（[2]）进行了开发和研究。将我们的注意力集中在WTO农业谈判中的一个问题上，我们引入了SEM IT TQS SAVD的出口补贴，并将其应用于完全竞争国际贸易情况下的国际乳制品市场分析（[3],b[10]）。研究了近年来空间均衡模型的发展方向（[4]），明确了空间均衡模型引入风险的重要性和更实用的营销路径。在此基础上，研究了关税配额制下从价税和从价税下的盈利贸易者国际贸易空间均衡模型，并得到了该模型实例问题的均衡解。针对日墨FTA农业谈判中的一个问题，在国际贸易完全竞争（[6]）的情况下，从理论上引入差别关税，得到了该模型（[7]）实例问题的均衡解，并利用该模型（[9]）对日本猪肉进口市场进行了研究。在寡头垄断国际贸易的情况下，我们将差别关税引入到SEM IT TQS SAVD中，得到了该模型实例问题的均衡解（[8]）。参考文献[1]-[8]和[10]包含在本报告中。

We introduce export quota and minimum export prices to the existing "Spatial Equilibrium Model of International Trade under Tariff Quota System with Specific and Ad Valorem Duties" (abbreviated as SEM IT TQS SAVD) in the case of perfectly competitive and oligopolistic international trade, and get equilibrium solutions of example problems of this model (Reference [1]). We prove the existence of a solution to Linear Complementarity Problem in SEM IT TQS SAVD we developed and study on its algorithm ([2]).Focussing our attention on a point at issue in WTO agricultural negotiation, we introduce export subsidies to SEM IT TQS SAVD and apply it to analysis of international dairy products market in the case of perfectly competitive international trade ([3],[10]).I study on the direction of development of spatial equilibrium model in recent years ([4]), and make clear the importance of introducing risk and more practical marketing route to spatial equilibrium model. Then I study on spatial equilibrium model of International Trade by Profit-Making Traders under tariff quota system with specific and Ad Valorem duties ([5]), and get equilibrium solutions, of example problems of this model.Focussing our attention on a point at issue in FTA agricultural negotiation between Japan and Mexico, we theoretically introduce differential tariff to SEM IT TQS SAVD in the case of perfectly competitive international trade ([6]), then get equilibrium solutions of example problems of this model ([7]), and also we study Japanese pork import market with this model ([9]). We introduce differential tariff to SEM IT TQS SAVD in the case of oligopolistic international trade, and get equilibrium solutions of example problems of this model ([8]).References [1]-[8] and [10] are included in this REPORT.