本文选取了中国1999-2010年31个省市区的面板数据为分析样本，构建面板数据联立方程模型，分别从全国层面和东、中、西部三大地区层面，实证研究了产业集聚对环境污染的影响。结果发现，产业集聚有利于降低环境污染程度，产业集聚并不是近年来环境污染和生态破坏加剧的原因；对外开放程度对环境污染的影响显著为负，从整体上来看，“污染避难所”假说在中国并不成立；产业集聚的正向环境外部性效应存在显著的区域差异，对东部地区环境污染的改善作用大于中西部地区。在此基础上，运用两步系统广义矩估计法进行稳健性检验，发现产业集聚对环境污染具有正U形影响，且二者关系处于U形曲线的下降通道中，因此，产业集聚达到一定程度时将有助于改善环境污染。%This paper selects the panel data from Chinese 31 provinces during the 1999-2010 as sam-ples for analysis and establishes panel data simultaneous equations model .The paper investigates the effect of industrial agglomeration on the pollution environment from the national level and the eastern , central and west-ern regions.The results show that industrial agglomeration is beneficial to reduce the degree of the environment pollution.It shows that industrial agglomeration doesn't aggravate environmental pollution and ecology de-stroys in recent years .The level of opening -up has a significantly negative influence on the environmental pollution.In general, the “pollution haven” hypothesis does not hold in China .The positive environmental externality effect of industrial agglomeration has a significantly difference with region .The improvement of en-vironmental pollution in the eastern region is greater than that of central and western regions .Based on this , this paper uses two step system of generalized moment estimation method to test the robustness of results and then finds that , industrial agglomeration has a U-shaped effect on environmental pollution , and the relation-ship between them is in downward path of the U-shaped curve .Therefore , industry agglomeration is benefi-cial for improving Chinese environmental pollution.
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