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研討日期 |
2009年2月14日 10:20 ~ |
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研討地點 |
台大社會科學院經濟系館二樓會議室 |
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討論題目 |
題目 |
作者 |
文獻出處 |
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Trade
liberalization, optimal environmental policy in a vertical related market |
林燕淑 黃鴻 鍾嘒陵 |
Working
paper |
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報告人 |
林燕淑 |
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參加人員 |
黃鴻 黃瑞萌 梁文榮 許素華 丁虹仁 鍾暳陵 吳世傑 許竹荃 邱俊榮 林燕淑 馬道 彭正浩 張民忠 周品旭 陳玉晏 涂光億 曾靜枝 王光正 高國峰 張瑞雲 林晏如 王佳琪 蔡明芳 陳金盛 周冰瑤 李朝功 |
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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 ( In each country there is a government whose goal is to maximize
national welfare by setting the value of pollution tax 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. |
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論文結果 |
(1) 兩國的中間財市場為獨佔時，上游最適環境稅率將與下游 最適環境稅率相同。 (2) 中間財為完全競爭下的最適環境稅率恆大於獨佔下的最適環境稅率。自由貿易且下游為污染產業時，當邊際傷害遞增的程度 (3) 自由貿易下，不論中間財市場結構為獨占或完全競爭，最適環境稅率皆低於皮古稅；此外，當中間財市場為獨占下，政府所採行的環境政策較接近皮古稅。 (4) 當環境傷害遞增的程度很小【大】，不論中間財市場的結構為何，貿易自由化將導致環境稅下降【提高】；而中間財市場為完全競爭時，較容易發生green policy. Extension: 1. variable return to scale in production function, intermediate-good export, which can see the environmental policy difference between upstream and downstream 2. n firms setting in upstream, which can see the effect of market structure change in upstream |
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備註 |
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) 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.
and 
) if the downstream (upstream) firm is a polluted industry.
