中国家庭非金融财产差距研究(1989-2011年)——基于微观数据的回归分解

Research on Non-financial Assets Gap in Chinese Families(1989-2011):Based on the Regression Decomposition of Micro-data

本文利用1989-2011年中国健康与营养调查(CHNS)数据,运用基于回归的夏普里值分解等方法,研究了中国家庭非金融财产差距及其影响因素。研究发现,1989-2011年间,中国家庭非金融财产水平高速增长,但非金融财产差距呈现先扩大后缩小的"倒U型"变化趋势。其中,城市家庭非金融财产差距呈现整体缩小趋势,农村却处于持续扩大状态之中。其次,从影响因素来看,人均年龄和家庭规模是产生家庭非金融财产差距的最重要决定因素,但随着家庭人口数的下降,家庭规模对家庭非金融财产差距的百分比贡献率在逐渐下降。教育和收入对家庭非金融财产差距的百分比贡献率则不断提高,并在2006-2011年间取代年龄和家庭规模成为最重要影响因素。

This paper studied the non-financial assets gap in Chinese families and its influence factors by taking advantage of China Health and Nutrition Survey （CHNS） data from 1989 to 2011 ,and using methods such as regression based Shapley Value Decomposition.The study found that the level of non-financial assets in Chinese families from 1989 to 2011 grew rapidly; however, the ＂inverted u-shaped＂ changing trend showed that the gap enlarged at first and then narrowed. Among them, the non-financial assets gap tended to be reduced in urban families entirely while it tended to be enlarged continually in rural families. Then, from the point of influence factors ,average age and family scale were most important determinants of family non-financial assets gap; however, as the family population declined, the percent contribution rate of the family scale on family non-financial assets gap was gradually declining.The percent contribution rates of education and income on family non-financial assets gap were constantly rising and replaced age and family scale as the most important influence factors from 2006 to 2011.