收入增长、户籍地差异与营养消费——基于进城农民工家庭的研究

Income Growth,Household Registration Difference and Nutrient Consumption——A Study Based on the Rural-urban Migrants Family

伴随着中国社会结构的分化和城市化进程,农民工群体内部的异质性不断加大。本文利用国家统计局城镇住户调查数据,聚焦于收入增长和户口所在地的户籍属性对进城农民工家庭营养消费的影响,并探讨收入增长与营养消费关系的户籍地差异。结果表明：收入增长和户籍地差异对进城农民工家庭营养消费有显著影响;农民工家庭能量、蛋白质和脂肪需求的收入弹性为分别为0. 593、0. 610和0. 533;在保持其他因素不变的情况下,户籍地差异使本地农民工家庭的人均每天能量、蛋白质和脂肪消费比外地农民工家庭分别高19. 24%、18. 41%和15. 84%。收入增长对外地农民工家庭的能量、蛋白质和脂肪摄入的正向作用大于其对本地农民工家庭的影响。

Along with the social structure differentiation and the urbanization in China,the heterogeneity of migrant workers is increasing. This paper focuses on the impact of income growth and household registration attributes on the nutrient consumption of migrant worker＇s family in urban areas,and explores the differences in nutrient consumption when the household registration and income growth are different. The results show that income growth and household registration difference have significant impacts on the nutrient consumption of migrant workers＇ families. The income elasticities of energy,protein and fat demand for migrant worker＇s family are 0.592,0.605 and 0.553,respectively. In the case of keeping other factors unchanged,the per capita daily energy,protein and fat consumptions of the local migrant worker＇s family are 19.72%,18.29% and19.36% higher than those of the non-local migrant worker＇s family. The positive effects of income growth on the energy,protein and fat intake of non-local migrant worker＇s family are greater than its effects on the local migrant worker＇s families.