中文摘要：

空间集聚是产业集群固有特征,也是产业集群识别和分析的核心。采用Ellison和Glaeser1997设计的产业集聚指数和产业间共同集聚指数,重点对江苏省5个典型的制造业产业集群的空间集聚特征进行了分析。结果表明,5个典型的制造业产业集群均存在明显的产业集聚和产业间共同集聚。通过比较县域和市域两个尺度下的产业集聚和产业间共同集聚特征,发现,各集群空间集聚范围有一定差异,钢铁、机械装备制造集群、石油、化学加工集群和汽车制造集群的空间集聚范围明显超越县域在市域,电子、通讯制造集群集聚范围在县域和市域尺度同时存在,而棉毛纺织服装制造集群集聚范围主要在县域。还发现,各集群的集聚程度也存在差异,电子、通讯制造集群无论是产业内还是产业间集聚程度最高,达高集聚水平,表明电子、通讯制造集群内外部性很高,集群内企业具有很强的相互吸引作用。汽车制造集群集聚程度较低,其他集群集聚程度为中等水平。

英文摘要：

Recently, industrial cluster has become the hot topic in Chinese regional studies and the new idea of the government officials in regional and industrial development. One interest and controversial question is to what extent of the geographic scope the industrial cluster agglomerates. In this paper, using principle component analysis（PCA）, several manufacturing industrial clusters in Jiangsu province is identificated firstly. Then, based on the firm data, the Ellison-Glaeser（1997） indices of agglomeration and co-agglomeration are employed to study the agglomeration characteristic of geographic scope of the 5 representative manufacturing industrial clusters. Whereas agglomeration reflects the extent to which firms in the same industry locate near each other, co-agglomeration reflects the extent to which firms in different industries locate near each other. Allowing comparisons of agglomeration and co-agglomeration at different levels of geography, the geographic scope agglomeration and the spillovers of manufacturing industrial cluster can be detected. The result shows that geographic scope agglomeration of steel and machine industrial cluster, petroleum and chemicals industrial cluster and automobile manufacturing industrial cluster stride over the boundary of county obviously and reach the city region, the firms of electronic and communications equipment industrial cluster agglomerate at both county and city level, and the firms of plumule textile and apparel industrial cluster agglomerate only in county geographic scope. The result also shows that among the 5 representative manufacturing industrial clusters, the electronic and Communications equipment industrial cluster has the highest indices of intra-industry agglomeration and inter-industry agglomeration, which indicates that the highest spillovers in the industrial cluster.