全球失衡与财政货币冲击——基于战争视角

本文从战争视角切入,对全球失衡进行了深入分析。鉴于美元的中心地位,文中引入一国货币为国际储备货币,构建了基于垄断竞争和黏性价格的两国一般均衡模型,考察了储备货币发行国的财政冲击和货币冲击对全球失衡以及他国经济与福利的影响。美国巨额战争开支引致的财政恶化是影响其经常账户赤字的重要因素。得益于美元的国际储备货币地位,美国的巨额赤字才得以弥补,美元换财富的模式才得以持续;而非储备货币国家的产出、消费、经常项目和贸易条件等在长期都受到负面冲击,居民福利下降。为应对"美元霸权",中国应积极推进人民币国际化。     

全球经济失衡的特征及其对我国的影响

1990年以来,全球经济失衡现象不断加剧。主要表现在两个方面：一是美国经常账户的巨额逆差;二是亚洲国家经常账户大量顺差,尤其是对美贸易顺差。面对全球经济失衡,我国应如何应对呢？学术界是智者见智、仁者见仁。全球经济失衡对我国改革开放和经济发展既是挑战又是机遇。我们应该对其特征、原因进行研究,分析了解全球经济失衡对我国的影响。     

居民消费能力视角下的中国经常账户顺差影响因素协整分析

持续、巨额的经常账户顺差给中国带来了一系列负面影响。彻底扭转中国经常账户失衡,迫在眉睫。文章基于居民消费能力的视角,对中国经常账户问题进行了理论和实证分析。理论研究结果表明,居民消费能力是影响中国经常账户的主要因素;实证研究结果表明,中国经常账户顺差与居民消费能力、投资率、净国外资产比率和人口抚养比存在长期动态均衡关系,其中居民消费能力是影响经常账户的重要因素且与经常账户余额/GDP呈负相关关系。最后文章提出了相关的对策和建议。     

中国国际收支失衡及调整对策研究——基于2004—2013年数据分析

基于2004—2013年中国国际收支的相关数据,对中国国际收支的失衡现象进行统计分析,认为失衡重点表现为由货物贸易顺差占主导的经常账户顺差、由直接投资顺差引起的资本与金融账户顺差,以及双顺差现象导致的巨额外汇储备。运用结构分析法分析中国国际收支失衡的主要原因,并提出扩大内需、改善外汇储备结构、调整出口结构三方面的对策建议。     

国际收支结构分析法新探——以我国双顺差为例

传统的国际收支结构论主要以经常账户为分析框架,作者将这种分析方法拓展到经常账户和资本账户,认为国际收支不平衡是由于结构性的原因引起的.其中经常账户不平衡可能与一国的产业结构有关,而资本账户失衡则可能是国内金融结构缺陷造成的.具体到我国,经常账户和资本账户的巨额"双顺差"某种程度上也是由于结构性因素造成的.针对当前全球国际收支失衡,作者认为无论是支出转换型政策还是支出增减型政策,只能起到数量和规模上的调节作用.要根本解决一国国际收支失衡,需要通过供给政策实现结构性的调整.     

供求冲击与我国经济外部失衡——基于DSGE两国模型的模拟分析

文章为分析我国经济外部失衡问题,运用当前国际经济学领域先进的动态随机一般均衡(DSGE)两国模型研究方法,模拟了在不同消费替代弹性下以技术冲击为代表的供给冲击和以货币冲击为代表的需求冲击对一国经济外部失衡的影响。研究结果表明这两种冲击发生后该国的外部资产和汇率水平会从初始的0均衡状态偏离,而到最终收敛大约需要10年到15年的时间。这可以很好地解释当前我国的经济外部失衡,文章也依此提出了相应的政策建议。     

收入不平等和中国经常账户失衡问题研究

文章通过理论分析和实证分析论证了收入不平等和中国经常账户失衡的数量关 系.首先构建了收入不平等和经常账户关系的两期模型,研究表明:低收入人群的跨期消费决策受到参照群体(高消费群体)消费外部性的影响,且这种影响随着收入不平等程度的增加而增加;同时,收入不平等对经常账户的影响与金融发展程度相关.随着收入不平等程度的增加,金融发展程度越高,经常账户越容易产生赤字;当金融发展程度较低时,低收入人群获得自由借贷的范围和水平受到限制,普遍推迟当前消费,进而导致经常账户盈余.文章还基于中国1980-2012年的统计数据,采用GMM估计方法对收入不平等和经常账户的关系进行了实证研究,结果表明:收入不平等是造成中国经常账户失衡的重要影响因素;收入不平等对中国经常账户的影响还受制于中国的金融发展水平.     

资本账户开放与国际金融冲击的传导——基于DSGE模型的分析

本文在动态随机一般均衡的框架下,建立了一个包括贸易部门和非贸易部门的小型开放经济模型,系统研究和比较资本管制与资本账户开放两种情况下,国外金融冲击、出口需求冲击对中国经济的不同影响和传导机制,并检验资本账户开放情形下应对国际冲击时不同货币政策规则的有效性。结果发现：当资本账户开放时,一国受到国外冲击的波动幅度远大于资本管制的情况;资本管制和资本账户开放对国际金融冲击传导机制的关键差异在于贸易部门与非贸易部门的互动关系,具体表现为劳动力转移的差异;在资本账户开放后,面对不同形式的国际冲击,货币数量型规则和混合型规则均能有效熨平经济波动。     

关于加工贸易、实际汇率与经常账户的分析

考虑我国自然资源相对缺乏、加工贸易快速发展、实行固定汇率制度和强制结售汇制度等基本特征,建立了一个分析我国实际汇率和经常账户问题的计量模型,并对人民币实际汇率与经常账户的关系进行了实证研究。结果表明,我国经常账户持续顺差并非由汇率低估所致,人民币汇率调整难以根本解决经常账户持续顺差问题。资本管制放松、社会保障体系不健全和收入差距逐渐加大是我国1994年以来经常账户持续顺差的主要原因。在我国对外开放程度日益提高的情况下,妥善处理我国的经常账户持续顺差问题应从以下几个方面入手:稳定实际利率、名义汇率升值、加快社会保障体系建设和缩小居民收入差距。     

我国国际收支“双顺差”的成因及对策探讨

本文结合我国近十年（2001—2010）的国际收支状况,分析了经常账户和资本与金融账户‘奴顺差”出现的原因,并提出了一些政策建议。     

Interest Rates, Exchange Rates and Present Value Models of the Current Account

This paper develops a testable intertemporal model of the current account that allows for variable interest rates and exchange rates. These additional variables are channels through which external shocks may influence the domestic current account. The restrictions from the theoretical model are subjected to present value tests using quarterly data from three small open economies. The paper finds that including the interest rate and exchange rate improves the fit of the intertemporal model over what was found in previous studies. The model predictions better replicate the volatility of current account data and better explain historical episodes of current account imbalance.     

Cross-country evidence on the relation between stock prices and the current account

This article explores the relation between stock prices and the current account for 17 Organization for Economic Co-operation and Development (OECD) countries in 1980–2007. A panel Vector Autoregressive (VAR) model is used to compare the effects of stock price shocks to those originating from monetary policy and exchange rates. While monetary policy shocks have little effects, shocks to stock prices and exchange rates have sizeable effects. A 10% contraction in stock prices improves the current account by 0.3% after 2 years. Hence a channel – in addition to the traditional exchange rate channel – is found through which external balance for an OECD country with a current account imbalance can be restored.     

Imbalances over the Pacific

This paper examines various theories of current account (trade) imbalances between the U.S. and China, by estimating a structural VAR model with long-run zero restrictions. The factors that we examine include: productivity differential, fiscal policy, consumption/saving choice, and real and nominal demand side factors comprising monetary policy, and reserve accumulation. On average, technology shocks are found to play a dominant role in explaining the trade balance movement between China and the U.S. However, in the particular period of 2004–07 when global imbalances peaked, we find that demand shocks played an unusually large role. This contrast between the average tendency and the rather abnormal development in the mid-2000s provides general equilibrium evidence for several theories of current account (trade) balance imbalance. But it also shows that the experience of the mid-2000s does not have to repeat itself, given that it was an atypical development different from the average tendency.     

The Behavior of the Current Account in Response to Unobservable and Observable Shocks

The intertemporal approach to the balance of payments states that non-stationary flows in the current account will cointegrate or cotrend, unless there are permanent productivity shocks or long-run policy distortions. This paper examines the dynamics of the current account for a small open economy, using data from Sweden. The results show borderline cointegration for the current account. Recursive estimates disclose that there is no stable tendency towards finding cointegration. Cointegration is found for the first part of the sample, but from 1990 the cointegration test performs badly until speculative attacks force Sweden to give up the peg of the krona in 1992. In terms of the intertemporal approach, policy could be creating the imbalance, solved with the depreciation in 1992, after which the external accounts gradually move back to long-run equilibrium. [F31, F32, F41]     

中国经济的内外均衡与财税改革

我国经常项目持续的大规模顺差,给国民经济的健康发展带来一系列的不利影响。在前人研究的基础上,通过对各种影响因素进行分类拆解,本文试图从理论和实证角度说明长期的储蓄-消费失衡是造成我国贸易顺差的一个重要原因,而其背后的根本原因是由于企业可支配收入相对于劳动者报酬不断提高带来的收入结构和储蓄结构失衡。我国当前企业未分配收入大幅增长的原因可以归结为企业利润率"虚高"和国企"不分红"问题。只有从体制上解决这个问题,才能使储蓄降低到适当的水平,通过拉动内需消除我国过大的贸易顺差,从根本上解决内外经济比例失衡问题。     

Why have business cycle fluctuations become less volatile?

This paper shows that a standard Real Business Cycle model driven by productivity shocks can successfully account for the 50% decline in cyclical volatility of output, its components, and labor input that has occurred since 1983. The model is successful because the volatility of productivity shocks has also declined significantly over the same time period. We then investigate whether the decline in the volatility of the Solow Residual is due to changes in the volatility of some other shock operating through a channel that is absent in the standard model. We therefore develop a model with variable capacity and labor utilization. We investigate whether government spending shocks, shocks that affect the household’s first order condition for labor, and shocks that affect the household’s first order condition for saving can plausibly account for the change in TFP volatility and in the volatility of output, its components, and labor. We find that none of these shocks are able to do this. This suggests that successfully accounting for the post-1983 decline in business cycle volatility requires a change in the volatility of a productivity-like shock operating within a standard growth model. We thank Stephen Parente, Ed Prescott, John Taylor, and two anonymous referees for helpful comments and suggestions.     

Fiscal stance,the current account and the real exchange rate: Some empirical estimates from a time-varying framework

This paper examines the time-varying time series processes of the interaction between government fiscal deficits, the current account balance and the real exchange rate for the U.K. and U.S. economies. This is achieved in a novel way by estimating a time-varying vector autoregression model that allows for time variation in the stochastic variance and autoregressive parameters. This paper finds that, contrary to results reported in the recent literature, government deficit shocks worsen the U.S. current account balance. In contrast, results based on the historical time series for the U.K. show evidence of fiscal deficits having actually improved the current account balance. However, in commonality, the time-varying estimates show that the impact of fiscal deficits on the U.K. and U.S. current account balance has fallen in magnitude over the past 20 years. The time-varying variance decomposition results illustrate that fiscal deficit shocks played a key role in driving U.K. current account and real exchange rate fluctuations throughout the 1980s. In contrast, fiscal deficit shocks have been a small factor in the variation of U.S. current account and exchange rate fluctuations over the past 25 years. The time-varying results in this paper do not support the view that future fiscal deficit reductions alone can eliminate U.K. and U.S. current account imbalances.     

基于MB及ES分析框架估算我国经常性账户失衡

以经常性账户失衡为表现形式的全球失衡水平在2007年,即美国次贷危机全面爆发前达到峰值。早在2006年,中国已跃居成为全球最大的顺差国,现今全球顺差的1／4来自中国。在IMF构建的三种旨在衡量一国经常性账户“合意”水平的框架下,本文对我国外部失衡进行了估算。结果显示,我国经常性账户余额占GDP比重的理论水平约3．12％,2004年以来,我国实际汇率的调整幅度存在一定程度的滞后。加快人民币汇率市场形成机制的改革是治理我国外部失衡的有效手段之一。     

Structural Change in Current Account and Real Exchange Rate Dynamics: Evidence from the G7 Countries

Previous studies decompose the current account and the real exchange rate into temporary and permanent shocks and argue that a temporary shock creates the combination of a current account surplus (deficit) and real exchange rate depreciation (appreciation). The present paper extends their framework by examining a possible structural break in current account and real exchange rate dynamics. Using G7 country data for 1980–2007, we find structural changes in two‐variable dynamics for all G7 countries during the 1990s. Temporary shocks have not been the main source of fluctuation in the current account since the 1990s. Our empirical results imply that the conventional mechanism has played a limited role in explaining the dynamics of the two variables.     

Asset prices, exchange rates and the current account

This paper analyses the role of asset prices in comparison to other factors, in particular exchange rates, as a driver of the US trade balance. It employs a Bayesian structural VAR model that requires imposing only a minimum of economically meaningful sign restrictions. We find that equity market shocks and housing price shocks have been major determinants of the US current account in the past, accounting for up to 30% of the movements of the US trade balance at a horizon of 20 quarters. By contrast, shocks to the real exchange rate have been less relevant, explaining about 9% and exerting a more temporary effect on the US trade balance. Our findings suggest that large exchange rate movements may not necessarily be the key element of an adjustment of today's large current account imbalances, and that in particular relative global asset price changes could be a potent source of adjustment.