中美两国经济波动及其相互影响的频域分析

以中美两国ＧＤＰ增长率为研究对象，通过计算其时变谱函数并联系经济现实，对两国各自的经济波动情况进行了分析。在此基础上，通过计算中美两国ＧＤＰ增长率间的时变增益函数，分析两国经济波动间的相互影响。结果显示，２００８年以前美国对中国经济的影响在逐渐减弱。即使发生了２００８年的金融危机，美国对中国经济的影响也主要集中在出口行业，美国经济受中国的影响在持续增加，并且这种影响主要集中在产业结构和社会消费习惯等方面。目前，这种影响依然存在。

A Spectral Analysis of Chinese and U.S.Economic Fluctuations and Their Interaction

Based on the growth rate of Chinese and U.S.GDP,their economic fluctuations are analyzed by calculating the time-varying spectrums and contacting the economic realities.Meanwhile,the time-varying gains are calculated to analyze the interactions between the Chinese and U.S.economic fluctuations.The results show that the impact of U.S.on China’s economy was gradually weakening before 2008.In spite of the financial crisis in 2008,the U.S.’s impact on China is mainly concentrated in the export industry.Nevertheless,China has an increasingly greater influence on the U.S.,mainly in the industrial structure and social consuming habits.After the financial crisis in 2008,such influence still exists.