Meat demand in China: to include or not to include meat away from home?

This study examines meat consumption in China, the world's largest meat consumer and producer, by considering both meat consumed at home and away from home based upon a diary‐based household survey. The results indicate that income growth leads to beef, poultry, other meat and pork away from home consumption to grow more than proportionally to total meat consumption. We also find that meats consumed away from home grow faster than at home counterparts due to higher income elasticities, suggesting that ignoring meat away from home could significantly underestimate current and future meat consumption.     

铅山县经济社会发展对林地需求的研究

从铅山县“十一五”期间占用征收土地情况和占用征收林地情况,分析林地变化的成因和趋势,从而推算铅山县在2011-2020年随着经济的快速增长其土地和林地总的需求量。     

我国的经济增长和能源需求

文章总结了工业化国家经济增长和能源需求关系的一般规律,在分析我国工业化以来经济增长和能源需求关系与之相比的共同性和特殊性的基础上,提出了我国能源强度的变动要依次经历“倒U”曲线、“U”曲线和再次“倒U”曲线三个阶段的假设,并进行了经济计量检验,最后对我国“十一五”时期的能源需求进行了预测。     

Revisiting Aggregate U.S. Meat Demand with a Bayesian Averaging of Classical Estimates Approach: Do We Need a More General Theory?

Although meat demand is one of the most studied issues in agricultural economics, our understanding of this phenomenon has been hampered by valid concerns about model specification uncertainty. This article revisits the need for more general theories of aggregate U.S. meat demand. Using a Bayesian averaging of classical estimates approach, we draw comprehensive inferences over 1,048,576 demand systems. We find very little evidence supporting the need for more general theories that include demand determinants beyond prices and expenditures. We find strong evidence in support of symmetry and negativity, but strong evidence against homogeneity, which is consistent with other research.     

Consumption of dairy products in urban China: results from Beijing, Shangai and Guangzhou

Using urban survey data collected by the authors in 2001–02, this paper analyses demographics, cultural factors and purchasing behaviours influencing the consumption of fresh milk, yogurt, ice cream and powered milk in Beijing, Shanghai and Guangzhou, China. Results from estimation of a double-hurdle model of consumption show that income and marketing channels are the key determinants of milk consumption levels; however, education, advertising and convenience play a more important role in consumption of other dairy products. There is some evidence that milk powder, as a consumer good, may be becoming an inferior product in urban China. Finally, the survey data suggest that the growing sophistication of China's retail sector is influencing consumption of dairy products.     

Household size and residential water demand: an empirical approach*

The effectiveness of pricing policies depends on the price elasticity of consumption. It is well documented that residential demand for water is influenced by heterogeneity associated with differences in the size of the household and socioeconomic characteristics. In this paper, we focus on household size. Our initial hypothesis is that users’ sensitivity to changes in price is different depending on the number of household members. To this end, we carry out an empirical estimation of urban water demand in Zaragoza (Spain) distinguishing between households with different sizes using data at the individual level. As far as we are aware, this approach to urban residential water demand is new in the literature. The analysis suggests that all households are sensitive to prices regardless of size. A more relevant finding is that small households are more sensitive to price changes.     

An Error Corrected Almost Ideal Demand System for Crustaceans in the United States

We have employed an error-corrected almost ideal demand system (ECAIDS) for major crustaceans at a disaggregated level in the United States. The proposed model can provide short- and long-run price elasticities. This article makes an important empirical contribution by reporting a set of reliable, policy-relevant estimates of the elasticities of demand for crustaceans in the United States. The habit formation behavior was significant only for crayfish. The value pricing strategy and the promotional pricing strategy are expected to benefit the domestic shrimp industry. Increasing prices through various marketing strategies can benefit domestic producers of lobsters and crabs.     

Does Food Safety Information Impact U.S. Meat Demand?

A theoretical model of consumer response to publicized food safety information on meat demand is developed with an empirical application to U.S. meat consumption. Evidence is found for the existence of pre-committed levels of consumption, seasonal factors, time trends, and contemporaneous own- and cross-commodity food safety concerns. The average demand response to food safety concerns is small, especially in comparison to price effects, and to previous estimates of health related issues. This small average effect masks periods of significantly larger responses corresponding with prominent food safety events, but these larger impacts are short-lived with no apparent food safety lagged effects on demand.     

Testing for pre‐committed quantities of Australian meat demand

Pre‐committed consumption represents the portion of demand that is determined by non‐price and non‐income factors. This study uses quarterly data to estimate a Generalised Almost Ideal Demand System (GAIDS) to test for the existence of pre‐committed meat consumption in Australia. Two specifications are estimated to evaluate the impact of seasonal and time trend factors on pre‐committed demand. Evidence is found for the existence of pre‐committed chicken consumption when jointly estimated with seasonal and time trend factors. Results support improved demand modelling of Australian meat consumption using the GAIDS and provide insights into how Australian meat demand is affected by price, expenditures, pre‐committed consumption, seasonality, and trends.     

Wholesale Demand for Fish in Greece

Inverse demand systems explain price variations as functions of quantity variations. This article presents a dynamic inverse almost ideal demand system (AIDS) model based on recent developments on cointegration techniques and error correction model. The case of fish landed at Greek seaports appears to suit this model well. The results indicate that the underlying distance function is homothetic whereas the own-quantity flexibilities suggest that the responses of price to own-quantity changes are inelastic. Finally, the results of cross-quantity uncompensated flexibilities suggest that the substitution possibilities among fish grades are rather limited. The Allais interaction intensities verified the substitutability among fish grades as well.     

Efficient Estimation of Hedonic Inverse Input Demand Systems

This article is concerned with efficient estimation of characteristics demand. We derive and estimate an inverse input demand system for quality characteristics by using 172,946 observations over 881 trading days in the Icelandic fish auctions. An improved estimation method based on an expanded random coefficient model is suggested as an alternative to the currently used two-stage method of Brown and Rosen . The estimates demonstrate the improved efficiency of the suggested method. A number of empirical results emerge, including a general increase in the demand for quality.     

The Nested PIGLOG Model: An Application to U.S. Food Demand

A new demand system is introduced, the Nested PIGLOG model, nesting thirteen other demand systems including five that are also new. This new model and its nested special cases are applied to models of U.S. food demand that include food-at-home (FAH), food-away-from-home (FAFH), and alcoholic beverages. Although nested tests and out-of-sample forecasting performance favor generalizing models to a certain degree, statistically insignificant improvements to in-sample-fit and even poorer out-of-sample forecast accuracy undermine further generalizations. Based on a subset of preferred models, FAFH is found to be price and income elastic compared to FAH which is price and income inelastic.     

At‐home meat consumption in China: an empirical study*

The remarkable economic changes occurring within China since 1978 have resulted in a striking alteration in food consumption patterns, and one marked change is the increasing consumption of meat. Given China’s large population, a small percentage change in per capita meat consumption could lead to a dramatic impact on the production and trade of agricultural products. Such changes have major implications for policy makers and food marketers. This paper concentrates on meat consumption patterns in the home in China. A censored linear approximate almost ideal demand system model was employed in the study, and major economic parameters were estimated for different meat items. Data used in this study were collected from two separate consumer surveys – one urban and one rural in 2005.     

渝西地区水资源供需预测及对策研究

通过分析渝西地区现存水资源的条件和利用现状,以当地的发展趋势为背景,预测了该地区至2030年的需水量增长趋势,结果表明研究区内地表产水量极为短缺,只得依靠过境水量补给.但由于水资源的时空分布不均和人类需求不一致,水质污染严重,导致渝西地区水资源的供需矛盾仍然存在,在此基础上提出了渝西地区社会经济可持续发展的水资源利用的对策.     

城镇化对我国粮食刚性需求影响的研究

粮食安全问题是目前城镇化进程中的风险之一.通过分析后认为,城镇化过程中粮食总体消费弹性区间呈收窄趋势,粮食刚性需求越来越大,这一现象在城镇地区相较于农村地区更为显著.其次,虽然粮食产量持续增长,但由于不确定性的增多,农产品供给难以保持与需求同步增长,一旦发生粮食减产,势必从多方面威胁到我国的经济形势.     

Recreation Nonparticipation as Choice Behavior Rather Than Statistical Outcome

In recreation demand models nonparticipation is usually estimated as the probability mass on zero demand given a positive level of expected demand and a discrete distribution of demand outcomes. Researchers have attempted to improve predictions of nonparticipation by modifying the parameters of the demand distribution. This study departs from previous approaches by explicitly incorporating nonparticipation into the behavioral model. The choice to participate is described by a distribution of preferences combined with a choke price on individual demands to distinguish participants from nonparticipants. The model is found to accurately predict nonparticipation and the size of the user group.