Some neglected issues in food demand analysis: retail-level demand, health information and product quality

Food demand analysis is dominated by the econometric estimation of demand systems based on aggregate market data and steady progress has been made in analytical techniques. Yet some issues have been neglected in food demand analysis which are crucial for understanding recent consumption trends in industrialised countries. Three of these issues are dealt with here: analysis of food demand at the retail level; influence of health information on food demand; and importance of product quality for food demand. It is shown that answers to important questions in these areas can be given when large and unconventional data sets are used.     

食品安全监督管理中快速检测技术的运用试析

食品安全问题直接关系到人们的生命健康,需要引起高度重视,也要落实好食品安全监督管理工作,保障食品质量安全,避免食品安全问题对人们造成不良影响。另外,做好食品安全监督管理工作,需要运用好各项检测技术,严格执行相关部门所提出的标准与要求。本文分析了快速检验技术在食品安全监督管理中的运用情况,并提出了相关的改进性意见,以期快速检测技术水平实现进一步提高,更好地为食品安全保驾护航。     

Urbanization and food imports in sub-Saharan Africa

The Granger statistical test of causality was used to examine the relationship between total food imports and urbanization and between food aid and urbanization. Urbanization appears to have caused total food imports to increase in 13 of the 24 countries. Food imports appear to be a cause of urbanization in three countries. Food aid, however, apparently was a cause of urbanization in 16 of the 24 countries used in the analysis.     

提高食品检验准确性的措施

食品安全问题会对人们的健康产生直接影响,研究最近几年的食品安全问题发现,政府与社会对于食品安全的关注度逐渐提高。为了真正保障食品安全,需要做好对应的食品检测,提高食品检测工作质量,进而为人们创造一个健康的生活环境,满足社会对于食品检验的要求。     

我国粮食安全责任战略的实现行为研究

本文采用行为经济学的系统研究方法,分析了国家粮食安全责任战略的实现行为及相互关系。笔者认为,提出国家实施积极的粮食安全责任战略必须大力营造粮食安全责任的良好社会行为环境,努力发挥政府行为的主体性和主导性,充分利用市场行为的有效性和基础性,不断提高粮食安全责任的农户行为积极性和创造性,着力推进粮食产区粮食安全责任行动战略。     

Critical issues suggested by trends in food,population, and the environment to the year 2020

This article reviews the emerging trends in global food supply and demand up to 2020, and discusses policy challenges and obstacles to meeting this demand. Data were obtained from the International Food Policy Research Institute's International Model for Policy Analysis of Commodities and Trade (Rosegrant et al.). The country-specific data pertains to 37 countries and regions and 17 food commodities and prices in the world market. Cereal prices are expected to decline by about 11% by 2020; meat prices may decline by 6%. After 2010, cereal prices are expected to dramatically decline. Cereal demand will change with changes in income and urbanization. Maize and coarse grains will be replaced by wheat and rice. Life style changes may lead to a switch from rice to wheat. Growth in food consumption in developed countries will slow. A projected 82% of growth in global cereal consumption and almost 90% of increased global meat demand will occur in developing countries during 1993-2020. Asia alone will account for 48% of increased cereal consumption and 61% of increased meat consumption. 88% of food production growth will occur in developing countries through increased yields and 94% in developed countries. World trade in cereals will increase from an estimated 185 million metric tons annually to 328 million during 1993-2020. Food security for the poor and child malnutrition will remain unimproved. Yield growth is affected by agricultural research, fertilizer and energy use, land degradation, water scarcity, and bad policy. Water scarcity is the most limiting on yield growth. Malnutrition problems present multiple challenges.     

Grain Production and Food Security in Arab Countries

Grains are the most important group of products in the food security programs of the Arab countries. These countries suffer from a shortage of food in general and in particular a shortage of grains. This results from a rapidly growing population and growing disposable incomes. This paper describes the grain sector in the economy of the Arab countries with special attention to its role in the national and regional food security programs. First, output and consumption of grains between 1973 and 1984 are analysed in all Arab countries, with special attention to wheat. Second, the concept of food security is discussed. Food security is defined as continuity of food supply to the whole population and unhampered access to food by all groups of the population. Food security is considered principally as a problem of short-term variability of food production and instability of imports. Food insecurity is thus measured by the size of production and consumption variability in relation to the long-term levels of consumption and production. The standard deviation and the coefficient of variation are used as indicators of the variability. Last, strategies and policies for achievement of food security are discussed. The growing food supply gap in the Arab countries implies the need to increase grain production as an element of major importance in the development of food-security programs. Proper grain policies must foresee increases of yields, reduction of post-harvest losses, and increased capacity to handle and store grain reserves. The establishment of national and regional Arab strategic grain stocks equal to the average magnitude of harvest shortfalls is recommended as one measure of short-term strategy. The long-term strategy, in turn, focuses on development of domestic agricultural production and greater cooperation among the Arab countries.     

Food quality in domestic markets of developing economies: a comparative study of two countries

Food quality has become an important determinant of success in global food trade and growers for international markets have to continuously adjust to buyers’ requirements. It is, however, not clear to what extent there is a demand for food quality—and how much buyers are willing to pay for it—in domestic food markets of developing economies. Based on unique comparable price and trader data in a poor country in Africa (Madagascar) and an emerging economy in Asia (India), we compare food quality and quality's pricing. We find significantly better quality and higher quality premiums (using revealed as well as stated preference methods) in India than in Madagascar. These findings are consistent with a simple theoretical model, solely based on average income gaps between the two countries.     

Trade,policy, and food security

Food insecurity is extensive throughout the world and hunger and malnutrition are expected to remain serious humanitarian and political concerns, both in the short term and for the foreseeable future, particularly in low income developing countries where many rural and urban households are both income and asset poor. In those countries, domestic agricultural production is expected to be especially vulnerable to the impacts of climate change over the next 30 years. Thus international markets for staple agricultural commodities, which have become increasingly important as sources of nutrition for both developing and developed countries over the past 60 years, are likely to become even more important in the future. Free trade policies allow countries to exploit their comparative advantages in economic activity, increasing average per capita incomes, longer term growth rates and a country's capacity to fund social safety nets for the poor. However, many countries abandoned those policies in favor of domestic protections in their efforts to mitigate the effects of short run food crises. The policy challenge is therefore to resolve the tension between optimal long run policies and short run initiatives to address food security concerns.     

Patterns of world wheat trade, 1945–2010: The long hangover from the second food regime

Food regime analysis is concerned with interpreting possibilities and conflicts inherent to the 21st‐century food system in historical terms. This paper summarizes the theoretical discussion of the food regime method, and of the identification of different “food regime periods” throughout modern history. While it is widely accepted that the so‐called “second food regime” has already ended, there is much discussion on whether or not it is possible to talk about a more recent third food regime. This paper traces the evolution of the “wheat complex” over the “second food regime” (1947–1973) and over the next 45 years, and offers an explanation for the evolution of world wheat trade distribution, based on food regime analysis. Certain authors have claimed that the collapse of the WTO Doha round of negotiations may be understood as a “hangover” from the second food regime. Similarly, this paper argues that the increasing wheat dependence of poor and insecure countries over the past 40 years may be considered as a path dependence outcome of a process initiated during the second food regime.     

粮油食品中黄曲霉毒素检测技术研究

食品安全和食品质量控制需要科学合理且高效的检测技术和检测手段来作为保障.在粮油食品中,黄曲霉毒素检测是质检质控的重要内容,本文围绕这类检测技术进行了探讨,概述了黄曲霉毒素的内容和涵义,分析了粮油食品中黄曲霉毒素的主要危害,论述了粮油食品中黄曲霉毒素检测技术,供相关人士参考.     

Farming within a dual legal land system: An argument for emancipatory food systems planning in Accra,Ghana

Contestation over land is a central element of urban food systems. This paper examines how Ghana’s dual legal land system affects urban farmers. Situated within the “emancipatory planning” discourse, the paper investigates how farmers navigate customary and statutory land rules using tactics that include compliance, opposition and adaptation. Based on field work conducted in urban and peri-urban areas of Accra, the study demonstrates that farmers access land by working around, outside, and within the rules of the dual legal land system. The landowners on whom urban farmers depend also both comply with and violate these same rules. This system perpetuates inequities. Food systems policy and planning must address the structural and systemic inequities that are reinforced by the rules of the land game. The paper concludes with some reflections on how local and national policy and planning can do a better job in supporting urban food production in contexts characterized by complex, dual legal land systems.     

Food crops, exports, and the short-run policy response of agriculture in Africa

The response of agriculture to changes in relative prices is an important factor in the success of structural adjustment programs in Africa. In this paper I estimate supply functions for total agricultural output, food crops and export crops in 14 African countries for the years 1975 to 1990. Food and export crops are substitutes in production in the short run. Total agricultural output responds negatively to increases in export prices and positively to increases in food prices. A plausible explanation is that as farmers shift resources to export crop production, food supply falls in the short run, while the increase in export supply may take several years to materialize. The exchange rate is significant in explaining both food and export crop production and aggregate agricultural supply, suggesting that the exchange rate is acting as a proxy for excluded macroeconomic variables or that changes in the exchange rate are not passed immediately through to prices.     

国内外绿色食品研究的知识图谱分析

通过运用文献计量软件CiteSpace,以中国知网(China National Knowledge Infrastructure,CNKI)和Web of Science数据库中的绿色食品文献为研究对象,通过对研究机构、关键词共现和关键词突现的分析,总结1990—2020年国内外绿色食品研究的总体特征.结果表明:① ...     

Can structural adjustment work for women farmers

This article discusses the impact of structural adjustment programs (SAPs) on women farmers in developing countries. SAPs aim to improve economic efficiency and promote more rapid economic growth. SAPs are introduced in two phases. The first phase involves short-term loans with the condition that the country adopt monetary restraints and currency devaluation measures. In the second phase, long-term loans are given with the provision that the country deregulate their economy and open up markets. The agricultural sector is affected by SAPs because of their importance in employment, income generation, and export earnings. SAPs result in lower farm commodity prices due to currency devaluations and in removal of subsidies, which results in market-sensitive pricing or higher food prices. The impact of SAPs on agriculture vary between countries. In Morocco and Algeria, agriculture expanded under SAPs. In Indonesia, Bolivia, Costa Rica, and Mexico, the agriculture stagnated or declined. Agricultural growth was slowest in Africa. SAPs were somewhat successful in increasing agricultural exports. Food production grew slowly in many adjusting countries. Blame for failures of SAPs has been placed on government failure to implement reforms properly and overly optimistic assumptions about the timing of productive gains. Little attention has focused on the constraints facing women farmers, who are a large proportion of farmers, particularly in sub-Saharan Africa. This article focuses on the issues of limited access to resources, credit, agricultural extension and information, land ownership, education, and time as constraints to women farmers. Women also must ensure household food security. For SAPs to work effectively, complementary policies must be implemented that reallocate available productive resources and new technologies to women and that deal with women's constraints.     

Demand for animal‐derived food in selected Asian countries: A system‐wide analysis

Food consumption patterns in Asia show a trend away from staples toward high protein food derived from animal and dairy products, fruit and vegetables, fats and oils. Such changes in food consumption patterns are due to rising incomes, urbanization, globalization, and modernization of marketing infrastructure. In this article, we analyze the demand for the animal‐derived food group comprising meat (chicken, beef, pork, and mutton), eggs and fish, and derive income and price elasticities in seven Asian countries using the system‐wide approach. Demand homogeneity and Slutsky symmetry properties were tested and found to be compatible with the data. Our findings reveal that animal‐derived food as a group is a necessity (except in Taiwan) and its demand is price inelastic (except in Taiwan and Sri Lanka). The implied unconditional demand elasticities reveal that, in all countries (except beef in Japan and Taiwan), chicken, beef, pork, mutton, eggs and fish (except in Taiwan) are all necessities and the demand for all types of animal‐derived food in all seven countries are mostly price inelastic. The cross‐price elasticity estimates are mostly found to be positive, meaning that there is a higher degree of substitutability between chicken, beef, pork, mutton, eggs, and fish.     

Food Aid, Food Prices, and Producer Disincentives in Ethiopia

Although the short-term aims of food aid are well conceived, strong concerns have been voiced regarding the long-term impacts of such aid on incentives for agricultural producers in recipient countries. This article examines the statistical link between food aid shipments and food prices in Ethiopia over the period 1996–2006. Monthly data from three markets and three commodities are used to estimate a system of seemingly unrelated regression models for food prices. Results indicate that previous year food aid shipments reduce prices in all producer and consumer markets. These effects, however, appear to be limited to the set of internationally traded commodities that are domestically marketed. A recursive regression procedure is used to identify the food aid threshold at which a negative aid effect emerges. Food aid shipments that constitute less than 10% of domestic production appear to be benign, but shipments above this level show signs of being disruptive to local markets. We use a simple policy simulation to argue that production-sensitive targeting, e.g., conditioning food aid on local food production, would help to circumvent disincentive effects.     

食品检验检测中存在的问题分析及应对措施

食品安全是直接关系人们生活的重要问题,同时也是人们所关注的重点问题之一.实施食品安全管理可以有效减少安全事故发生,保障消费者权益.现阶段,食品市场中经常会存在一些安全问题,实施食品安全管理迫在眉睫,本文主要是针对食品检验检测中存在的问题开展分析,完善市场经济管理.     

Market intermediaries,storage and policy reforms

Intermediaries play a crucial role in the functioning of agricultural and food markets in developing countries through linking production, imports and storage with consumption. We analyse how competition in the intermediary sector and alternative forms of intermediaries determine the incentives for storage and market outcomes more generally. We apply this framework to the Egyptian wheat sector as an illustrative case study, a country where food security is a priority, where both forms of intermediaries co-exist and undertake storage but where issues of reforms to the role of intermediaries have been raised. Through stochastic simulation, we analyse two changes in government policy: first, the effects of changing the policy instruments with both types of intermediaries undertaking storage; second, relating to market reforms where the private sector replaces the storage function of the parastatal. These issues have wider significance for addressing the interaction between food security and a wide range of policy reforms including de-regulation of parastatals in developing countries.