统计研究 ›› 2011, Vol. 28 ›› Issue (9): 28-34.

• 论文 • 上一篇    下一篇

人民币汇率应对美国非对称冲击的缓冲机制及效应分析

谷宇 安辉   

  • 出版日期:2011-09-15 发布日期:2011-09-19

The Mechanism and Effects Analysis of RMB Exchange Rate Reacting to Asymmetric Shocks from US

Gu Yu & An Hui   

  • Online:2011-09-15 Published:2011-09-19

摘要: 本文依据汇率决定理论,构建包含人民币汇率、中美两国GDP、通货膨胀率和利率的向量自回归模型,并基于结构向量误差修正模型(SVECM)方法,识别了包含巴拉萨——萨缪尔森效应的人民币汇率决定方程及人民币汇率传递效应方程,进一步应用方差分解判断了中短期内人民币汇率应对源自美国的非对称冲击的缓冲机制。结果表明,人民币汇率长期升值趋势的根本动因是中国产出及通胀水平相对美国的提高,而汇率传递效应则是不完全的。在1-2年内,人民币汇率的波动来源主要受源自美国的需求冲击(实际冲击)影响,而在3-5年内则主要受美国货币政策扰动(名义冲击)影响。因此,央行重启人民币“汇改”将增强人民币汇率应对外部冲击的缓冲作用。

关键词: 汇率, 非对称冲击, 巴拉萨-萨缪尔森效应, 结构向量误差修正模型

Abstract: Based on the theory of exchange rate determination, this paper constructs the VAR model including the variables of the RMB exchange rate, the GDPs, the inflation rates and the interest rates of China and US. With the tools of structural VECM, we identify RMB exchange rate determination equation and RMB exchange rate pass-through effect equation, and analyze the impact effects of Sino-US underlying economic variables on RMB exchange rate in the long run. And this paper uses the tool of variance decomposition to judge the mechanism how RMB exchange rate absorb the asymmetric shocks resulting from US. The empirical results show that the higher output growth rate and inflation rate of China compared with the ones of US are the essential causes of RMB appreciation in the long-run, and the exchange rate pass-through effect is incomplete. And in one or two years, the resources of RMB exchange rate fluctuation come from the demand shocks (real shocks), however, the resources of RMB exchange rate fluctuation mainly come from the monetary policy disturbances of US (nominal shocks) in three to five years. So, re-launching RMB exchange rate forming-mechanism reform by central bank might enhance the ability of RMB exchange rate to cushion external shocks.

Key words: Exchange Rate, Asymmetric Shock, Balassa-Samuelson Effect, Structural VECM