本文引入跨期最优消费模型,将实际经常项目分解为平滑性经常项目与倾斜性经常项目,以分析中国经常项目的动态特征。研究发现,中国经常项目不仅受收入性因素的影响,还受到倾斜性因素的影响;利用协整分析方法得到中国消费倾斜系数的估计值为1.19;在1982—2011年期间,中国倾斜性经常项目持续顺差,中国平滑性经常项目基本上是逆差;利用向量自回归模型预测了中国平滑性经常项目,预测模型很好地反映了中国平滑性经常项目的变化,这表明中国在经历净产出的短期波动时,以消费平滑为基础的平滑性经常项目模型很好地解释了中国平滑性经常项目。
This paper introduces the intertemporal model of optimal consumption and decomposes China' s current account into smoothed current account and tilted current account in order to analyze China's current account. The empirical result shows that China's current account affected by income factor and tilting factor. The consumption tilting parameter has been estimated robustly as 1.19. During the period 1982 -2011, China's tilted current account was surplus; China's smoothed current account was basically deficit. We could not reject the hypotheses that China's smoothed current account was consistent with optimal smoothing.