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  • 學位論文

央行干預在匯率波動對貿易的影響上所扮演的角色

Does Central Bank’s Intervention Matter for the Effect of Exchange Rate Volatility on Trade?

指導教授 : 吳博欽
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摘要


自2005年7月起,中國將匯率制度從釘住美元到釘住一籃子貨幣。在這兩種匯率制度中,中國央行還是不斷干預其外匯市場。 在傳統的貿易模式中,貿易均衡一直從線性函數的經濟基本面來做探討,然而,央行的干預對其貿易餘額的影響還有貿易模型是否呈現線性的形式仍有待研究。本文利用干預指數做為平滑轉換函數,調查貿易模型中各個解釋變數對各國貿易均衡造成的影響。 實證結果發現,美國、日本和歐盟的貿易均衡的確呈現非線性走勢。而在貿易模型中,中國央行干預行為與各個變數在不同期間內造成貿易餘額變動的影響均大不相同,且其經濟意涵也不一樣。

並列摘要


China has reformed the exchange rate regime from pegging to the US dollar to a currency basket system since July 2005. In these two exchange rate regimes, the People’s Bank of China (PBOC) continuously intervenes in foreign exchange market. In traditional trade model, trade balance is displayed as a linear function of macroeconomic fundamentals. However, whether trade balances are influenced by central bank’s intervention and whether the trade model is a linear form are still unverified. This paper constructs smooth regime switching equation with intervention index to investigate the impact of our explanatory variables on trade model. Empirical evidences show that the trade model in U.S., Japan and E.U. do exhibit smooth regime switching in spite of different transition speeds. We find that each variable has effects on trade model vary with transition variable (intervention index) within different intervals.

參考文獻


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