全球价值链分工下区域贸易协定能降低服务贸易成本吗

全球价值链分工下服务的作用愈发凸显,服务贸易的新形式丰富了区域贸易协定影响服务贸易成本的渠道。本文从中间投入和最终需求两个维度分析了区域贸易协定对不同类型服务贸易成本的影响效果和机制。结果表明:单纯签订区域贸易协定对服务贸易成本的抑制作用并不显著,提高区域贸易协定的深度将显著降低服务贸易成本。区域贸易协定可以显著降低中间投入服务贸易成本,对最终需求服务贸易成本的抑制效应不显著。区域贸易协定的服务贸易自由化效果存在非对称性,北北型区域贸易协定对服务贸易成本的抑制效应强于南北型。北北型区域贸易协定可以通过减少监管分歧和货物贸易自由化效果外溢两条途径降低服务贸易成本,南北型区域贸易协定则仅可以通过货物贸易自由化的外溢效应来降低服务贸易成本。因此,中国应积极与发达国家开展高质量区域贸易协定谈判,通过提高区域贸易协定深度充分发挥其服务贸易自由化效果。

Does Regional Trade Agreement Reduce Service Trade Costs in Global Value Chains?

The role of services in the global value chain has become increasingly prominent,and the new form of service trade has enriched the channels through which regional trade agreements(RTA)affect the cost of service trade.This article analyzes the impact of and mechanism of RTAs on the trade costs of different types of services from intermediate input and final demand.The results indicates that just signing RTAs does not have a significant decreasing effect on the cost of trade in services,and increasing the depth of RTAs will significantly reduce the cost of service trade.RTAs can significantly reduce the trade cost of intermediate input services,while have no obvious effect on that of final demand services.NN-type RTAs have a stronger decreasing effect on the cost of service trade than NS-type RTAs.Reducing regulatory differences and the spillover effects of goods trade liberalization are two channels for NN-type RTAs influencing the service trade costs,while NS-type RTAs can only reduce the service trade costs through the goods trade liberalization.Therefore,China should actively participate in the negotiation of highquality RTAs with developed countries and give full play to the facilitation of service trade of RTAs through improving the depth of RTAs.