经济理论与经济管理

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食品价格冲击对核心CPI的传递效应*——基于3种核心CPI的比较研究

吕建兴,毛学峰,曾寅初#br#   

  1. 中国人民大学农业与农村发展学院
  • 出版日期:2017-05-16 发布日期:2017-05-17
  • 基金资助:
    本文得到中国人民大学科学研究基金(中央高校基本科研业务费专项资金资助)项目(10XNI034)的资助。

THE PASSTHROUGH EFFECT OF THE FOOD PRICE SHOCKS ON CORE CPI——The Comparative Research of Three Kinds of Core CPI

LV Jian-xing,MAO Xue-feng,ZENG Yin-chu#br#   

  1. School of Agricultural Economics and Rural Development,Renmin University of China
  • Online:2017-05-16 Published:2017-05-17

摘要:

本文利用2001—2015年的月度数据,在计算多种核心CPI的基础上,实证分析了食品价格冲击对核心CPI的传递效应。本文研究发现,我国食品CPI存在高惯性特征,其对核心CPI具有较大的冲击作用,长期传递系数为0140;这种传递效应在2008年12月前后存在内生性结构突变,突变前后两阶段的长期传递系数分别为0186和0097;虽然2008年12月以后食品价格对核心CPI的冲击下降幅度较大,但长期传递系数仍具有明显的上升趋势。这些结果表明,食品价格冲击已经显著影响我国通货膨胀的持续性成分,我国货币政策应重视食品价格冲击带来的传递效应;尽管我国政策调整的作用有所显现,但是稳定物价的压力依然很大。

关键词: 食品价格 , 核心CPI , 菲利普斯曲线 , 传递效应 , 未知断点

Abstract: Based on the calculation of several core CPI,in this paper we analyze the passthrough effect of food price shocks on core CPI during 2001 to 2015The results show,food CPI has high inertia characteristics,which has great impact on core CPI,and the longterm passthrough coefficient is 0140After considering the endogenous structural breaks,we find the longterm passthrough coefficient of core CPI still reach to 0186 and 0097,before and after the break of December 2008 respectivelyAlthough the impact of food prices on the core CPI decreased greatly after December 2008,the longterm passthrough coefficient remains significantly increasedThese results suggest that the food price shocks have a significant impact on the persistent component of Chinas inflation,and the monetary policy should pay attention to the passthrough effect of food price shocksAlthough the policy adjustment effects have appeared,the stable price pressures are still strong

Key words: ood prices , core CPI , Phillips curve , passthrough effects , unknown breakpoints