为研究我国制造业对外开放对能源效率的影响方式,笔者运用25个制造业行业2000年-2011年的面板数据,基于能源库兹涅兹曲线的思路,用外贸依存度和外资依存度来表征对外开放程度进行实证检验。结果表明,制造业对外开放对能源强度的影响呈非线性,能源强度随外贸依存度变化呈先上升后下降的倒U型曲线,随外资依存度变化呈先下降后上升的U型曲线。目前我国制造业稳中有降的外贸依存度和稳中有升的外资依存度都对能源效率起到了积极的作用。
In order to find out the way openness affecting energy efficiency in Chinese manufacture industry,based on concept of energy Kuznets curve,the paper,through adopting the panel data of Chinese 25 industries from 2000 to 2011,empirically studies the influence of degree of openness on energy intensity. Result proves the existence of non-linear relationship. Specially speaking,there exist inverted U curve relationship between energy intensity and foreign trade dependency,and U curve relationship between energy intensity and FDI dependency. Therefore,the current downward trend of Chinese foreign trade dependency and upward trend FDI dependency for manufacture industry are positively affecting the improvement of energy efficiency.