论文部分内容阅读
本文基于Anderson-Neary贸易限制指数理论,通过加入世界价格内生的条件,将贸易限制指数的小国模型扩展到大国开放经济中,得到市场准入政策改革的福利效应模型。通过理论分析得到,在一定的前提条件下,降低关税率的关税政策改革会导致社会福利水平的提升,放松配额、增加配额量的非关税壁垒政策改革也会增进社会福利水平。我国农产品市场准入政策改革的实证研究表明,关税的边际成本为负,非关税壁垒政策的影子价格为正,也就是说,我国降低关税率的关税政策改革和增加配额量的非关税壁垒政策改革都会促进社会福利水平的提升。
Based on the Anderson-Neary trade restriction index theory, this paper extends the small-country model of trade restriction index into a big-state open economy by adding the conditions of world price endogenesis and obtains the welfare effect model of the market access policy reform. Through theoretical analysis, under certain preconditions, the tariff policy reform that reduces the tariff rate will lead to the improvement of the social welfare level. The non-tariff barriers that relax the quota and increase the quota will also promote the social welfare reform. The empirical research on the market access policy reform of China’s agricultural products shows that the marginal cost of the tariff is negative and the shadow price of the non-tariff barrier policy is positive. In other words, the tariff policy reform to reduce the tariff rate and the non-tariff barrier policy to increase the quota amount Reform will promote the improvement of social welfare.