研討日期

2012121  10:30 ~ 13:00

 

研討地點

台灣大學社會科學院   社科院26教室

 

討論題目

題目

作者

文獻出處

 

Trade liberalization, optimal environmental policies in  vertical related markets

Hui-Ling Chung, Yan-Shu Lin

Working paper

 

報告人

暳陵

 

參加人員

黃鴻、林燕淑、彭正浩、張瑞雲、林晏如、張民忠、高國峯、鍾暳陵、林季萱、呂得成、施姵全

 

論文提要

We analyze the optimal environmental policies and how trade liberalization affects environmental policies in the context of vertical structure that supports production of the downstream-bilateral traded good.

Consider a symmetric, vertically related structure model of downstream bilateral trade. In the final-good markets, there is a single, tradable good produced by two firms, each located in a different country, domestic and foreign. Each firm sells in both countries. In addition, imports to each country are subject to a tariff, T, for simplicity, that we assume exogenous and the same in both countries. In the intermediate-good markets, we frame our model around a decentralized vertical market structure that supports the downstream in their own country.

In each country there is a government whose goal is to maximize national welfare by setting the value of pollution tax and  ( and ) if the downstream (upstream) firm is a polluted industry.

The model involves three stages of decision. In the first stage, the home and the foreign governments simultaneously commit to their environmental instruments. Next, the second stage the upstream firms choose input-price for their home market. In the third stage, the market for the final good involves a Cournot-Nash equilibrium.

 

論文結果

  It is found that the optimal environmental tax is smaller and the optimal environmental policy is less likely to be a green strategy under trade liberalization if the market structure in the intermediate good market is imperfect than perfect competition. On the other hand, the optimal environmental tax is necessarily higher if the upstream firm chooses price than quantity. Moreover, the optimal environmental policy is less likely to be a green strategy under trade liberalization if the upstream firms choose quantity than price to maximize their profits.

 

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