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英文文献：Household consumption and demand for bean in Uganda: Determinants and implications for nutrition security-乌干达家庭对豆类的消费和需求:营养安全的决定因素和影响
英文文献作者：Larochelle, Catherine,Katungi, Enid,Cheng, Zhen
英文文献摘要：
Pulses are vital for nutrition security and considered a cost-effective option for improving the diets of low-income consumers in developing countries. Sub-Saharan Africa has the highest proportion of people living in extreme poverty and highest per capita pulse consumption in the world. Most studies on pulse demand have largely depended on aggregated data at regional level and there is little information on household level consumption patterns across sub-population groups within the same geographical location. This study uses the most recently collected LSMS-ISA data in Uganda, which is nationally representative, to analyze household food demand, with a focus on bean (Phaseolus vulgaris L.) consumption in order to unmask differences between poorer and better-off households in urban and rural areas. An augmented Quadratic Almost Ideal Demand System (QUAIDS), accounting for censoring, is used to estimate household food demand, where bean is included as its own food group. Household spending on bean increases with wealth but food budget share spent on bean declines with wealth. As household expenditure increases, demand for bean increases, however the magnitude of this increment decreases as income rises and is of smaller magnitude in urban areas; an indication that urbanization has led to changes in consumer preferences. Demand for bean among rural and urban poor households is more responsive to changes in price compared with urban non-poor households, making the former more vulnerable to price volatility.
豆类对营养安全至关重要，被认为是改善发展中国家低收入消费者饮食的成本效益高的选择。撒哈拉以南非洲是世界上生活在极端贫困中的人口比例最高和人均脉搏消耗量最高的地区。大多数关于脉搏需求的研究在很大程度上依赖区域一级的综合数据，而关于同一地理位置内各亚人口组的家庭一级消费模式的资料很少。这项研究使用乌干达最新收集的具有全国代表性的lsm - isa数据，分析家庭食品需求，重点关注豆类(Phaseolus vulgaris L.)的消费，以揭示城市和农村地区较贫穷和较富裕家庭之间的差异。一个增广二次几乎理想需求系统(QUAIDS)，考虑了审查，被用来估计家庭食品需求，其中豆类被包括作为它自己的食品组。家庭在豆类上的支出随着财富的增加而增加，但食品预算中用于豆类的支出比例随着财富的增加而下降。随着家庭支出的增加，对豆类的需求增加，但这种增量的幅度随着收入的增加而减少，在城市地区这种增量的幅度较小;这表明城市化已经导致了消费者偏好的变化。与城市非贫困家庭相比，农村和城市贫困家庭对豆类的需求对价格变化更敏感，农村和城市贫困家庭更容易受到价格波动的影响。
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