中文摘要：

本文充分考虑到贸易的内生性,利用外生的地理特征为中国工业各行业的对外贸易构建了一个合适的工具变量,并运用这一工具变量结合中国1996-2007年工业各行业的面板数据研究了既定经济条件下对外贸易对中国工业CO_2排放的影响。结果表明：贸易开放度显著地减少了中国工业各行业的CO_2排放量和排放强度,＂贸易得益假说＂在中国是成立的。因此,在气候变化的背景下,中国不必为了减少CO_2排放而盲目去限制对外贸易。

英文摘要：

Taking full account of the endogeneity of trade and using exogenous geographic characteristics,this paper constructs an appropriate instrumental variable for foreign trade of Chinese industries and estimates of the effect of foreign trade of Chinese industries in1996-2007 on CO_2 emissions,for a given level of economy. We find that trade openness significantly decreases CO_2 emissions of Chinese industries and gains-from-trade hypothesis is proved in China. Therefore,in the context of climate change,China needs not to blindly limit foreign trade for reducing CO_2 emissions.