EXCHANGE RATE PROBLEMS IN NATIONAL ACCOUNTING OF DEVELOPING COUNTRIES*

Developing countries which typically have import surpluses and inflationary pressures because of insufficient savings are prone to use indirect taxes on imports (Tm) and subsidization of exports (Sx) in order to prevent deterioration of the balance of trade. If these substitutes for devaluation are included in the net indirect tax component of product at current market prices (Ym) the import surplus is likely to be understated, and Ym upward biased. This distortion will be avoided if imports and exports are measured at effective exchange rates (ER), that is, at official rates (OR) plus Tm and Sx respectively, and if (Tm - Sx) is deducted from the net indirect tax component of Ym. Only in this manner become imports and exports consistent with the other uses and resources at market prices and can be articulated with them. At base-year prices the volume index of product at OR diverges from that of ER to the degree that the composition of imports and exports in regard to tax and subsidy rates computed ad valorem significantly changes. Such a case is similar to that of the price indexes of imports and exports moving in diverging proportions: the trade balance at base-year prices will differ from that at current prices. The resulting discrepancies in national accounts have led to proposals of deflating, for example, exports by the price index of imports. Suchlike approaches are incompatible with the principle of national accounting that prices are supposed already to measure substitution values. Deflating exports by import prices means reintroducing substitution values, as does, for example, deflation of incomes by a consumer price index. Correspondingly, since the trade balance at ER conceptually expresses the value of imports at domestic market prices as compared to the corresponding domestic market value of exports, and if at ER the trade balance diverges from that at OR, the former balance has an important meaning (as has the trade balance at base-year prices as compared to that at current prices) and the resulting discrepancy between the two measures should not be removed merely for the sake of accounting smoothness. In contrast to the market price approach, the measurement of product at base-year factor cost is indifferent to the measurement of the trade balance at ER and at OR. It is, therefore, proposed in countries in which part of import taxation and export subsidization substitutes for devaluation, to record imports and exports in the national accounts at effective exchange rates, and to correct the net indirect tax component of product correspondingly. Imports and exports at official exchange rates should be shown within the balance of payments, and the latter separately as a memorandum item.     

Comparative Advantage With and Without Gains from Trade

In 1980, Deardorff, and Dixit and Norman, generalized the law of comparative advantage to show that the value of net imports at autarky prices (or "DDN index") is nonnegative, so that net imports are correlated with autarky prices. The DDN index can be decomposed into the sum of (i) the equivalent variation of gains from trade, and (ii) the difference in GNP at autarky prices between autarky and trade. Several examples are given of classical and neoclassical economies where (i) or (ii) can be zero. Hence gains from trade are sufficient but not necessary for the existence of comparative advantage.     

Are virtual water “flows” in Spanish grain trade consistent with relative water scarcity?

Virtual water adds a new dimension to international trade, and brings along a new perspective about water scarcity and water resource management. Most virtual water literature has focused on quantifying virtual water “flows” and on its application to ensure water and food security. Nevertheless, the analysis of the potential gains from international trade, at least from a water resources perspective, needs to take into account both spatial and temporal variations of blue (groundwater and stream flow) and green (soil moisture) water, as well as the socioeconomic and policy conditions. This paper evaluates whether Spanish international trade with grains is consistent with relative water scarcity. For this purpose, the study estimates the volume and economic value of virtual water “flow” through international grain trade for the period 1997-2005, which includes 3 years with different rainfall levels. The calculations show that Spain is a net virtual water “importer” through international grain trade. The volume of net virtual water “imports” amounts to 3420, 4383 and 8415 million m³ in wet (1997), medium (1999) and dry (2005) years, respectively. Valuing blue water at its shadow price or scarcity value, blue water “exports” oscillate between 0.7 and 34.2 million Euros for a wet and dry year, respectively. Overall, grain trade is apparently consistent with relative water scarcity as net imports increase in dry years. However, the evolution of grain exports, expressed as a variation in quantity and volume, does not match the variations in resource scarcity. A disaggregated crop analysis reveals that there are other factors, such as quality, product specialization or the demand for a standardized product, which also influence trade decisions and are not included in the notion of virtual water. These facts, among others, can therefore create potential distortions in the application of virtual water to the analysis of specific trade patterns. Nevertheless, from a water resources perspective, virtual water can bring important insights across countries for improving water and land management globally, fostering adaptation strategies to climate change and to transboundary resource management.     

A comparison of specialisation gains from trade in in final and intermediate goods

This paper sets out a method for measuring and comparing the specialisation gains from trade in intermediate goods and final goods, based upon a vertically integrated sectors (VIS) modelling approach. The factor input requirements of domestic production to replace imported intermediates is compared with the factor requirements of the ‘compensating’ exports required to purchase the imports. This method is applied to the UK economy, using a 28 sector model and a breakdown of factor inputs into land, labour and capital. Estimates of net factor-usage or saving on individual factor (weighted for factor quality differences) and multi-factor bases are reported. The results indicate that trade in inputs and outputs was net labour-using, and net-capital and land-saving in 1979. The overall, or multi-factor, gain from trade in intermediates was greater than for trade in final goods in 1979, with overall resource savings of 3·01% and 1·73% respectively.     

Comparing approaches to valuing sectoral net investments

In the literature of comprehensive national accounts, national net investments are used to indicate dynamic welfare improvement in an economy. A well-known approach associates national net investments with the shadow value of change in stock of capital assets in an economy. Following this capital stock approach, sectoral net investments can be defined as the shadow value of change in stock of capital assets owned by a sector in an economy. An alternative approach is based on future commodity flows to a sector. This commodity flow approach associates sectoral net investments with the present value of changes in future commodity flows to a sector. In the present paper, I compare these two approaches and prove that they coincide with each other only if the future commodity flows to the sector can be attributed to current stock of capital assets in the sector alone. In empirical studies, commodity flow approach can be a better alternative if the purpose is to estimate the contributions to national net investments of a recipient of future cash flows.     

UNMASKING THE POLLUTION HAVEN EFFECT*

We use theory and empirics to examine the effect of environmental regulations on trade flows. A simple model demonstrates how unobserved heterogeneity, endogeneity, and aggregation issues bias standard measurements of this relationship. A reduced‐form estimate of the model, using data on U.S. regulations and trade with Canada and Mexico for 130 manufacturing industries from 1977 to 1986, indicates that industries whose abatement costs increased most experienced the largest increases in net imports. For the average industry, the change in net imports we ascribe to regulatory costs amounting to 10% of the total increase in trade volume over the period.     

Use Tables for Imported Goods and Valuation Matrices for Trade Margins—an Integrated Approach for the Compilation of the Belgian 1995 Input–Output Tables

This paper describes the compilation of the use table for imported goods and the valuation matrix of trade margins for Belgium in 1995. It introduces the methodological novelty of integrating the compilation of both tables and systematically exploiting the fact that large import and export flows do not generate trade margins. This is notably the case for direct imports for intermediate consumption or investment by non-traders, and direct exports by producers. For identifying these trade flows, extensive use was made of intrastat and extrastat data. The results are compared with those of a proportional distribution of imports and trade margins. Many statistical offices resort to the latter approach because of a lack of survey data on the destination of trade margins and imports. We demonstrate that the integrated approach can improve the quality of both the import matrix and the valuation matrix for trade margins, while using only existing data sources.     

On the Causality between Trade Credits and Imports: Evidence and Possible Implication for Trade Penalties on Debt Defaults

Abstract

This study investigates the association between trade credits and imports of developing countries. Made available by its creditors, the main function of trade credits is to facilitate cross-border transactions of goods and services. This study finds that the reliance of imports on trade credits varies across regions and income: towards the end of the 1990s, the trade credits to imports ratio ranged from 0.20 for East Asia & the Pacific to 0.87 for Africa, and from 0.24 for high-income countries to 0.79 for low-income countries. Applying panel and cross-country estimation, we find that past trade credits help predict current imports, but past imports do not alter the future path of trade credits. Further, the positive association between trade credits and imports is larger for countries more dependent upon trade credits. The findings support the notion that countries make debt repayments to avoid any potential disruption on the line of trade credits. We also find that the trade credits penalty could materialize within less than two quarters.     

Pollution havens: international empirical evidence using a shadow price measure of climate policy stringency

Given the ambiguous empirical results of previous research, this paper tests whether support for a climate policy-induced pollution haven effect and the pollution haven hypothesis can be found. Unlike the majority of previous studies, the analysis is based on international panel data and includes several methodological novelties: By arguing that trade flows of dirty goods to less dirty sectors may also be influenced by changes in policy stringency, trade information on primary, secondary, and tertiary sectors are included. In order to clearly differentiate between dirty sectors and sectors with high pollution abatement costs, separate measures for pollution intensity and policy stringency are implemented. For the former, two intensities, namely the sectors’ carbon dioxide emission intensity and the emission relevant energy intensity, are used to identify dirty sectors. For the latter, an internationally comparable, sector-specific measure of climate policy stringency is derived by applying a shadow price approach. Potential endogeneity between climate policy stringency, trade openness and the trade balance is controlled for by employing a dynamic panel generalized method of moments estimator. The results provide evidence for a pollution haven effect that is also present for non-dirty sectors, i.e., a sector’s net imports rise in general if the sector faces an increase in climate policy stringency. Moreover, a stronger pollution haven effect regarding carbon dioxide intensive and emission relevant energy-intensive sectors is revealed. However, no support for the stronger pollution haven hypothesis can be found.     

外商直接投资、对外贸易与环境污染的实证研究

文章通过中国30个省(市、区)2000-2005年面板数据,对FDI与外贸的环境污染效应进行了实证分析.对外贸易与FDI整体上都促进了中国经济增长,其中,进口对经济增长的作用较小;出口与FDI加剧了中国环境污染;进口贸易可抑制环境污染,但作用比较小;人力资本具有显著的促进经济增长与抑制环境污染的双重功能.本文的政策建议是,调整出口与引资政策,发展教育,促进人力资本积累.     

我国棉花国际贸易“贱卖贵买”现象研究

通过对 1 978年以来世界上 1 0个最大棉花贸易实体进出口数据进行比较分析 ,发现我国棉花贸易具有极为反常的“贱卖贵买”特征 :即通常在国际棉价较低时处于棉花净出口国地位并出口较多 ,而在棉价较高时却处于净进口国地位并进口较多。上述“贱卖贵买”现象与国内长期维系棉花流通垄断和价格管制体制存在内在联系。改变传统棉改思路 ,成功地进行棉花流通市场化改革 ,是根治棉花贸易“贱卖贵买”问题的必要条件     

Elasticities of substitution and export demands in a world trade model

Alternative complete models of world trade, based on the trade shares matrix approach, are specified and estimated for twenty-seven countries and regions. This model attempts to explain the composition of imports on the bases of relative prices and time trend, given the total quantity of imports of each country. Elasticities of substitution amongst imports of different countries of origin in each import market are obtained and used in the derivation of aggregate export demand functions for the individual countries. There is also a comparison of the predictive performance of the alternative models.     

Trade,Growth, and Environmental Quality*

This paper examines linkages between international trade, environmental degradation, and economic growth in a dynamic North–South trade game. Using a neoclassical production function subject to an endogenously improving technology, North produces manufactured goods by employing labor, capital, and a natural resource that it imports from South. South extracts the resource using raw labor, in the process generating local pollution. We study optimal regional policies in the presence of local pollution and technology spillovers from North to South under both non‐cooperative and cooperative modes of trade. Non‐cooperative trade is inefficient due to stock externalities. Cooperative trade policies are efficient and yet do not benefit North. Both regions gain from improved productivity in North and faster knowledge diffusion to South regardless of the trading regime.     

The production and trade of manufactured products in the EEC and EFTA: A comparison

This paper presents an examination and comparison of trade creation and trade diversion in the EEC and EFTA. The methodology is based upon changes in shares of expenditure on apparent consumption of manufactured products between 1960 and 1968 on a disaggregated basis. The results indicate that there was considerable trade creation and only a modest amount of trade diversion for each trade bloc. In fact, there was in the aggregate net external trade created due largely to an expansion in imports from outside of either trade bloc and the United States. Despite their different memberships and tariff experiences, the results for the two trade blocs are remarkably similar.     

Trade distance functions and the derivation of inverse demand for imports

This article introduces a new representation of trade preferences termed as the trade distance function, which measures the maximum amount by which import quantities must be deflated or inflated to reach the indifference surface. The properties of this function are discussed and employed to derive systems of inverse demand for imported goods. We illustrate its usefulness by proposing two new parametric forms of trade distance functions. While the trade distance function directly yields Hicksian inverse demand functions of imports, they usually lack closed-form representations in terms of observable variables. This problem, however, need not hinder estimation and could be solved by using the numerical inversion estimation method. Results generally indicate that the suggested modelling and estimation methods are operationally, implying that the trade distance function approach is a promising tool of the empirical analysis of import demands subjected to tight theoretical conditions.     

Tariffs,Quality Choice,and Cost Functions: a Foreign Monopoly Case*

It has been shown that trade restrictions such as tariffs, import quotas, and voluntary export restrictions, lead to quality upgrading of imports. In this paper, however, we reconsider this proposition by focusing on the nature of cost functions. Based on a standard vertical differentiation model, we analyze the effects of tariffs on quality and quantity of imports. We show that if a fixed cost is an increasing function of quality, tariffs lead to quality downgrading of imports. Moreover, we discuss minimum quality requirements (MQR) for such a trade policy. We show that MQR increases the amount of imports and an importing country's welfare in the presence of the fixed cost function. These issues will be addressed in the context of a foreign monopoly.     

不同贸易方式技术溢出效应的比较——基于我国1987-2008年数据的实证研究

本文运用协整理论检验了我国1987-2008年间加工贸易进口和一般贸易进口的技术溢出效应.实证结果表明,加工贸易进口和一般贸易进口的技术溢出均对我国生产率起到了显著的促进作用,并且加工贸易进口的正向技术溢出效果远大于一般贸易进口的正向技术溢出效果.同时,加工贸易进口和一般贸易进口的技术溢出效应虽然长期显著地促进了我国生产率的增长,但这种正向技术溢出效应在短期内呈现出一定的滞后性.由于加工贸易进口在租金溢出效应、竞争效应与人力资本流动效应上的优势使得加工贸易进口的技术溢出效应大于一般贸易进口的技术溢出效应.     

Exchange‐rate Effects on China's Trade*

Though China's share of world trade exceeds that of Japan, little is known about the response of China's trade to changes in exchange rates. The few estimates available have two limitations. First, the data for trade prices are based on proxies for prices from other countries. Secondly, the estimation sample includes the period of China's transformation from a centrally‐planned economy to a more market‐oriented one. We address these limitations with an empirical model explaining the shares of China's exports and imports in world trade in terms of the real effective value of the renminbi. The specifications control for foreign direct investment and for the role of imports of parts to assemble exports. Parameter estimation uses disaggregated monthly trade data and excludes China's decentralization period. We find that a 10 percent real appreciation of the renminbi lowers the share of aggregate Chinese exports by nearly one percentage point. However, the estimated response of imports is negligible and lacks precision.     

How did wars dampen trade in the MENA region?

The article investigates the impact of wars on trade in the Middle East and North African region. Using an augmented gravity model that controls for the endogeneity problem in our estimation, we introduce a war variable and distinguish between different types of conflicts. The results show that wars have a significantly negative impact on exports, imports and trade. Civil conflicts hinder exports, imports and trade significantly. The disaggregated version of the gravity model shows that non-state conflicts have a detrimental effect on bilateral trade flows in manufacturing, and that none of the conflicts do affect trade in services. We also find that, on average, a conflict is equivalent to a tariff of 5% of the value of trade.     

Environmental regulation and intra-industry trade

The paper analyses complex interactions between intra-industry trade (IIT) and environment by extending Krugman's model of monopolistic competition and trade. It is found that an increase in exogenous environmental tax by a country leads to a fall in its output (the scale effect) and aggregate pollution, and an increase in its number of varieties (the selection effect). With IIT, if Home is a net exporter, an increase in its environmental stringency leads to a negative scale effect, which reduces its export demand and raises its import demand. In contrast, a positive selection effect reduces its import demand. However, the first-order scale effect on exports dominates the second-order effect on imports, implying a rise in Home's share of IIT with Foreign. The opposite holds true when Home is a net importer. Furthermore, the impact of a rise in environmental tax on aggregate welfare comprises the following counteracting effects: a negative scale effect, a positive selection effect, a lower level of aggregate pollution and a higher environmental tax revenue in autarky, and two additional effects, namely, changes in the level of exports and imports, under free trade. The overall change in aggregate welfare, in both autarky and free trade, is in general ambiguous.