贸易摩擦、异质性消费及其福利效应

Trade Frictions,Heterogeneous Consumption and Its Welfare Effects

在一个多国多产业的贸易模型中引入非同位偏好的异质性消费,按照消费者的收入水平将消费者分成不同的组别,同时将消费品分为制造业产品和服务、非贸易品以及农产品,发现富裕的消费者相对于农产品更偏好制造业产品和服务。在估算从贸易中获得福利水平时,与传统的代表性消费者模型对比发现,当贸易成本下降时,传统代表性消费者模型高估了穷人的贸易获利,而低估了富人的贸易获利。

Introducing heterogeneous consumption of non-homologous preferences in a multi-country multi-industry trade model,dividing consumers into different groups according to consumers’ income levels,and dividing consumer goods into manufacturing products and services,non-traded goods,and agricultural products.This paper finds that wealthy consumers prefer manufacturing products and services to agricultural products.When estimating the level of welfare from trade,compared with the traditional representative consumer model,when the global trade cost declines,the traditional representative consumer model overestimates the trade profit of the poor and underestimates trade profit of the rich.