基于边界检验的中国谷物进口需求研究

文章在边界检验的基础上建立进口需求函数的UECM模型,研究了我国谷物进口对收入与相对价格的短期和长期弹性,结果发现玉米和大麦进口对收入和相对价格具有长期均衡的关系。从4个国家进口不同谷物产品长期收入弹性系数均为负,相对价格均为正;我国从美国进口玉米的短期相对价格弹性和从法国进口小麦的长期收入弹性都明显较大,即我国对美国和法国谷物进口较敏感;而从泰国进口水稻和从澳大利亚进口大麦的进口收入和相对价格弹性相对较小,即我国对泰国和澳大利亚谷物进口不论短期还是长期均不敏感,并保持相对稳定,从满足国内谷物需求的角度看,我国应与这两个国家建立长期稳定的贸易合作关系。     

Distributional Effects of Lower Food Prices in a Rich Country

Controlling for differences in taxes and transportation costs, the Nordic Competition Authorities claims, in a report from 2005, that food prices are 11% higher in Sweden compared to the EU-15 countries. One explanation for this put forward in the report is the limited competition on this market which suggests there to be a potential for lower food prices. This paper focuses on distributional effects of a price decrease on food. Based on a simple model of household utility, the households demand for food is derived and estimated. Price and income elasticities for different income groups are then calculated based on these parameter estimates. Our results suggest that food is a normal good with an average income elasticity of approximately 0.18 and a price elasticity of 0.45. In addition, and of importance from a policy perspective, the results indicate the income elasticity to differ across income groups while price elasticities are constant.     

Who Gains From Nominal Devaluation? An Empirical Assessment of Euro‐area Exports and Imports

In early 2013, rumours about the euro‐appreciation gained momentum, which may lead to decreases in exports and increases in imports of the member states. Therefore, we investigate the impact of changes in the nominal euro exchange rate vis‐à‐vis major currencies on export and import performance of nine different euro‐area countries. To disentangle the ‘true’ equilibrium elasticities Stein's unbiased risk estimate (SURE) system error correction models (SSECM) are estimated for nominal exchange rate changes versus the rest of the world or other major currencies. To differentiate between price level changes and changes of the nominal exchange rate, a country's export and import equation is estimated using separately the nominal rate and the relative price/unit labour cost as regressors. Results of Wald tests indicate that assuming both variables to have the same influence on exports and imports is misleading. Whether the relative price/unit labour costs elasticities are high or low depends crucially on which indicator is chosen, while the effect of nominal exchange rate changes can be estimated robustly for all countries in the sample. In particular, France and Spain are hit by a euro‐appreciation since their exports are highly exchange rate elastic. However, for France, this effect is at least partly offset by an also negative exchange rate elasticity of imports.     

中国与印度农机产品的出口贸易及竞争力比较

本文运用了进出口相似度、进出口价格比、RCA指数等指标,对中印农机产品的出口状况、进出口价格及竞争力进行比较。研究结果表明,两国出口的农机产品结构相似,主要出口市场有较大重叠,存在较强的竞争性关系;中印农机产品的出口价格均低于进口价格,两国的贸易条件都较差,中国的进出口价格比低于印度,在贸易条件和出口盈利上处于劣势;中印农机产品的竞争力都很弱,中国只在出口规模上具有优势,竞争力水平不及印度。要改变中国农机产品的竞争力普遍较弱的现状,一方面应该利用自身的市场优势重点培育部分有竞争力的产品,另一方面应该借鉴印度经验培植国际知名的大企业,从而实现市场开拓、技术创新的梯队式发展。     

基于有界协整方法的中国进口需求弹性研究

有界检验是由Pesaran等(2001)新提出的一种协整分析方法,本文利用这一方法对改革开放以来中国进口贸易与其决定因素之间的长期关系和需求弹性进行了分析。结果表明,无论是长期还是短期,中国的进口需求相对于价格缺乏弹性,但相对于收入具有较高的弹性。这一结论具有重要的政策含义:其一,某些国家力图通过促使人民币升值来缓解其贸易赤字的做法是缺乏论据支持的;其二,中国经济的增长是世界经济的积极贡献因素。     

A REASSESSMENT OF AGGREGATE IMPORT DEMAND FUNCTION IN THE ASEAN-5: A Cointegration Analysis

This study aims to reinvestigate the empirical evidence on the long-run relationship of aggregate import demand behavior for the ASEAN-5 founding nations. This study adopts the import demand equation that has been developed by Xu (2002). The results of bounds test (Pesaran et al., 2001) show the volume of imports, activity variable (national cash flow), and relative price of imports are cointegrated in Malaysia and Singapore. However, no empirical evidence supports that these variables are cointegrated in Indonesia, Thailand, and the Philippines. This study provides a relevant implication specifically that devaluation strengthens the balance of trade. Following the Marshall-Lerner condition, exchange rate policies such as devaluation, can used to improve trade balance in Malaysia, Singapore, the Philippines, and Thailand, but not in Indonesia.     

“H-M-K假说”的检验——基于中国贸易结构数据的实证研究

“H-M-K假说”或克鲁格曼“45度规则”指出,对于经济处于快速增长的国家而言,如果该国与世界其它国家的经济增长率之比等于该国出口需求收入弹性与进口需求收入弹性之比,该国的实际汇率往往不会出现持续的贬值或升值趋势。本文首先拓展了该理论,得出一个与“45度规则”等价但更简洁的理论结论,然后对中国的情况进行了实证检验,检验结果表明:中国不符合“H-M-K假说”之结论。通过对中国进出口商品结构以及日本和中国双边贸易结构的分析,我们认为造成中国不符合“45度规则”的主要原因在于:我国出口商品结构中,初级产品、低附加值产品所占比重过大,高技术含量、高附加值产品占比过小,而进口商品结构则刚好相反。     

Gains and Losses from Preferential Trade Agreements: Some Evidence from NAFTA

In this article we integrate two topics in international trade policy that have received (separately) a lot of attention: the effects of regional trade blocs, and export pessimism regarding poorer countries. The specific issue that allows us to bring together these questions is whether regional integration adversely affects non-members. We use quarterly data on bilateral trade flows for the period 1990 through 1997 to examine U.S. imports from its NAFTA partners as well as from non-NAFTA trade partners, and more specifically, those countries expected to be hurt by NAFTA. Two measures are used:

1. “import penetration” or imports from a particular source as a share of US GDP, and

2. the income elasticity of expenditure on imports from a particular source. Both “import penetration” and the income elasticity of expenditure affect the export earnings of U.S. trade partners, a matter of particular concern for developing countries.

The broadest pattern observed in the income-expenditure elasticities is clear evidence of increased penetration by non-oil developing countries. This is in marked contrast to the stable GDP share and expenditure elasticity for developed country imports. Regional results suggest that the Caribbean and the East Asian NICs were the only area groupings that experienced a reduction in income-expenditure elasticity. But overall on the basis of U.S. income-expenditure elasticities it appears that the first four years of NAFTA were associated with trade expansion rather than trade diversion.     

汇率影响进出口国别结构的机理分析及弹性测度

通过机理分析,建立了汇率变化影响进出口国别结构的数理模型,计算出当汇率贬值或升值时,我国对各国出口、进口比重上升或下降,出口、进口需求价格弹性必须满足的条件。同时运用回归和弹性定义法,使用估算和精算相结合,测算了我国对五大贸易伙伴国进出口需求弹性,并将机理分析与弹性测度进行对比。     

基于马歇尔—勒纳条件的中国茶叶贸易收支研究

马歇尔—勒纳条件是分析汇率变动对贸易收支影响的重要理论。本文采用我国1986～2008年茶叶进出口的序列数据,通过分析我国对不同经济体的茶叶进出口需求弹性,并构建实际有效汇率等因素与茶叶贸易收支的计量模型,研究了我国茶叶进出口与马歇尔—勒纳条件间的满足关系。研究表明,我国与不同国家的茶叶贸易收支受汇率变动的影响不同;就我国茶叶对外贸易总体而言,茶叶进口价格下降会增加进口额,出口价格上升会增加出口额;而人民币升值会改善我国茶叶贸易收支,人民币贬值会恶化我国茶叶贸易收支,且进出口需求弹性之和小于1。因此,我国茶叶贸易收支反向符合马歇尔—勒纳条件,这为汇率波动背景下科学处理茶叶贸易问题提供了重要的理论指导。     

How Could the South Respond to Secular Stagnation in the North?

Developed countries face the risk of a sustained lack of aggregate demand, that is, secular stagnation. Demand‐oriented growth models emphasising the balance‐of‐payments constraint raise concerns about attendant adverse growth impacts on developing countries from reduced export growth. These concerns are well‐founded, albeit less serious than the simplest versions of these models would imply. Relaxing their assumptions and emphasising cumulative causation forces from domestic‐demand growth and relative price effects indicates how developing countries can combine export and domestic‐demand based strategies and how changed policies can maintain rapid growth while reducing the income elasticity of import demand.     

Assessing Dynamics of Palm Oil Import Demand: The Case of Six Asian Countries

This article uses annual data to investigate the palm oil import demand in selected Asian countries (India, China, Japan, Bangladesh, Korea, and Pakistan) through using the autoregressive distributed lag (ARDL) technique. The findings of the study show that the palm oil and substitute oils prices and the national income of the importing countries are significant determinants of palm oil demand across the six models. Other factors such as biofuel mandate, trade policies, and exchange rate also proved to be important factors affecting import demand for palm oil in some of these countries.     

World-wide effects and import elasticities

This paper shows that estimates of import demand elasticities will be biased towards zero from the exclusion of any variable that has internationally common or world-wide effects. This is true for both demand- and supply-affecting variables. The bias from world-wide effects is demonstrated in conjunction with the bias from mismeasured prices and quantities. It is shown that the true price elasticity can be bounded by the regression of quantities on prices and of prices of quantities. Estimates are presented on the range within which the true values lie. It is shown that the true import demand elasticities could be very large.     

Inaccuracy in foreign trade statistics of LDCs: The case of the ASEAN area

The foreign trade statistics of developing countries are relatively abundant and generally considered more reliable than data on their national accounts. This study reports the results of an accuracy test applied to export and import data from five developing countries (Indonesia, Malaysia, the Philippines, Singapore and Thailand), all members of ASEAN, a grouping which offers a particularly interesting sample of developing countries for this type of investigation.     

中国水产品出口增长的源泉分析

借助于联合国粮农组织"渔业统计时间序列通用软件"数据库数据,利用恒定市场份额分析模型对中国水产品出口增长源泉展开分析,并与泰国、印尼、印度和越南进行横向对比。研究结果表明:中国水产品出口的增加主要是由于水产品竞争力提高引起的,市场规模的扩大对中国水产品出口有着积极的作用,商品结构效应和具体竞争效应对水产品出口的作用由负面作用转为正向作用,说明水产品出口市场结构日趋合理,并开始对出口增长产生积极的促进作用。泰国、印尼和印度出口的增长主要得益于市场需求规模的扩大,越南则是其竞争力增强起到了主导作用。     

Trade in Services: The Elasticity Approach for The Case of Turkey

This study includes the analysis of global trade in the services and service sector in Turkey, and estimates the elasticity of trade in services to real exchange rates and income. There is an increasing role of the service sector in the Turkish economy; however, a decreasing trend of trade in services is taking place. The commitments of the General Agreement on Trade in Services (GATS) were found to be ineffective, at least in the case of Turkey. The empirical findings suggest that the real exchange rate is not a significant determinant for the trade in services. We found an inelastic real exchange rate and income elasticities in trade demand functions. However, the value of income elasticity significantly exceeds the value of real exchange rate elasticity.     

Thirlwall's law and the specification of export and import functions

The contribution of this paper is threefold. First, it proposes general specifications for export and import functions that encompass the contributions of both Kaldorian and Schumpeterian literatures on the determinants of trade performance. Second, the paper provides evidence of the impact of nonprice competitiveness, measured by the growth of relative economic efficiency on export and import growth in different technological sectors. Third, it shows that the magnitude of income elasticities of demand is partially determined by relative economic efficiency.     

Going Alone: The Case for Relaxed Reciprocity in Freeing Trade

We examine the output elasticity of infrastructure for four South Asian countries viz., India, Pakistan, Bangladesh, and Sri Lanka using panel cointegration techniques for the period 1980–2005. In this context, we develop an index of infrastructure stocks and investigate the impact of infrastructure on output. The study finds a long-run equilibrium relationship between output and infrastructure along with other relevant variables, such as gross domestic capital formation (GDCF), labor force, international trade and human capital. The results reveal that GDCF, labor force, export and expenditure on human capital exhibit a positive contribution to output. More importantly, infrastructure development contributes significantly to output growth in South Asia. Further, the panel causality analysis shows that there is mutual feedback between total output and infrastructure development.     

Political economy of the US–Mexican tomato trade agreement

We develop a political economy model to analyse the US–Mexican tomato trade agreement by treating the minimum import price as a negotiated settlement. We incorporate the special characteristics of the US–Mexican tomato dispute, namely trade among large countries, the role of competing fresh and processed tomato lobbies, quota revenues accruing to Mexican producers, bargaining for a minimum import price rather than a tariff, and the role of the Canadian tomato market. We show the importance of the size of the lobby group's supply, the weight elected officials' place on national welfare, and the elasticities of export supply and import demand in determining the optimal price wedge. For the United States, larger fresh tomato or cherry–grape tomato supply intensifies the degree of protection awarded to US growers, while US processors work to mitigate this effect. From Mexico's perspective, larger Mexican fresh or cherry–grape output induces a push towards free trade due to the agreement's depressing effect on Mexican prices, while Mexican processors and quota revenues exacerbate the price wedge.     

我国城乡居民食用农产品消费需求弹性比较——基于2003-2012年省级面板数据

文章利用AIDS模型,采用省级面板数据,对城乡居民主要食用农产品消费支出弹性及需求价格弹性进行估算,分析预算支出和价格变动对食用农产品消费的影响。结果表明：城乡居民对水产品和肉禽的消费支出均富有弹性,对粮食、植物油、蛋类和鲜瓜果的消费支出均缺乏弹性。农村居民对肉禽和蔬菜的支出弹性明显高于城镇居民。城乡居民对水产品的需求量对价格波动很敏感,但对粮食、肉禽、植物油、蔬菜和鲜瓜果的自价格弹性均为缺乏弹性。价格波动对城镇居民食用农产品消费的影响更大,而收入变动对农村居民食用农产品消费的影响更大。以上发现可为政府采取差别化政策引导居民改善食品消费结构及促进农业结构升级提供借鉴。