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本文在2008年爆发的全球性金融危机大背景下,考察了我国为应对金融危机所出台的扩张投资政策的实施效果。我们采用DEA数据包络分析法计算金融危机前后各省投资效率,并在此基础上研究投资规模扩张与投资效率变动之间的关系。研究发现:投资规模扩张确实能拉动经济增长。不过,相对于金融危机之前,金融危机之后我国绝大部分省份的投资效率呈现显著下降趋势,而这与投资规模扩张是紧密相关的。
In the context of the global financial crisis that broke out in 2008, this article examines the effect of our country’s investment policies for expansion in response to the financial crisis. We use DEA data envelopment analysis to calculate the investment efficiency of each province before and after the financial crisis, and on this basis, we study the relationship between the expansion of investment scale and the change of investment efficiency. The study found that: the expansion of investment can indeed stimulate economic growth. However, relative to the financial crisis, the investment efficiency of the vast majority of provinces in China after the financial crisis showed a significant downward trend, which is closely related to the expansion of investment scale.