收入增长对营养需求的影响分析——来自广东省城镇住户的证据

发布时间：2018-05-28 16:07

本文选题：收入增长 + 营养需求　；参考：《经济科学》2017年03期

【摘要】：关于营养需求与收入之间的关系一直存在争议。本文利用2009年广东省城镇住户数据,运用系统广义矩估计方法估计了城镇居民家庭能量和主要营养素需求的收入弹性,结果表明总体样本家庭的能量、蛋白质、脂肪和碳水化合物需求的收入弹性分别为0.273、0.298、0.238和0.291,收入增长对居民营养需求有显著正向影响。进一步运用门槛模型估计表明,营养需求与收入间呈非线性关系,能量和主要营养素需求与收入间的关系均在家庭人均收入为13970.11元处出现结构性突变,当家庭人均收入低于门槛值时,能量、蛋白质、脂肪和碳水化合物需求的收入弹性分别为0.7、0.71、0.712和0.684,而当跨过门槛值时,能量和碳水化合物需求的收入弹性转化为0.201和0.22,蛋白质和脂肪需求的收入弹性变为负值,但不显著。营养需求与收入间呈非线性关系意味着以消除营养不足为目标的收入调节政策的选择应该考虑不同人群的收入水平。
[Abstract]:The relationship between nutritional needs and income has been controversial. Based on the data of urban households in Guangdong Province in 2009, this paper estimates the income elasticity of energy and main nutrient demand of urban households by using the method of generalized moment estimation. The results show that the energy and protein of the total sample households are estimated. The income elasticity of fat and carbohydrate demand were 0.273 and 0.2980.238 and 0.291 respectively. Furthermore, the threshold model was used to estimate that there was a nonlinear relationship between nutrition demand and income, and that the relationship between energy and main nutrient demand and income had a structural mutation when the average household income was 13970.11 yuan. When household per capita income was below the threshold, the income elasticity of energy, protein, fat and carbohydrate requirements was 0.70.71 and 0.684, respectively, and when the threshold was crossed, The income elasticity of energy and carbohydrate demand was converted to 0.201 and 0.22, while the income elasticity of protein and fat demand became negative, but not significant. The nonlinear relationship between nutritional demand and income means that the choice of income regulation policies aimed at eliminating malnutrition should take into account the income level of different population groups.
【作者单位】：中国农业大学经济管理学院;
【分类号】：F126.2;R151.42

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