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本文在2007年投入产出表的基础上将城镇居民部门分为七个不同收入阶层,利用基于居民分层的投入产出局部闭价格影响模型模拟各种居民消费商品价格结构性变动对其他商品价格变动以及对不同收入阶层CPI的影响。主要结论有:假设各种商品价格变动1%,通过价格传导机制居民生活必需品比代表着更高生活层次的商品对其他商品涨价影响幅度较大;前者价格变动主要影响的是收入相对较低阶层,后者价格变动主要影响的是收入相对较高阶层;通过模拟各类商品价格变动1%、10%、20%、30%,发现不同收入阶层CPI的差异程度对食品价格变动最为敏感。
Based on the input-output table in 2007, this paper divides the urban residents ’departments into seven different income groups, and uses the model of partial closure price-impact model of input-output based on the residents’ stratification to simulate the structural changes of various consumer prices, Price changes and the impact on CPI for different income groups. The main conclusions are as follows: Suppose the price of all kinds of goods changes by 1%, and the necessities of life of residents through the mechanism of price transmission have a greater impact on the prices of other commodities than those representing higher levels of living. The former mainly affects the relatively low income The changes of the latter mainly affected the incomes at relatively high incomes. By simulating the changes in the prices of various commodities, the differences in CPI among different income groups were found to be the most sensitive to changes in food prices.