我国电子信息产业聚集水平的评价与分析

Evaluation and Analysis of Aggregation Level of China's Electronic Information Industry

从峰度和偏度角度出发构建了可以进行显著性检验的产业聚集指数,在此基础上对1987-2007年我国电子信息产业的聚集水平进行了测算和分析,结果表明,我国电子信息产业聚集现象十分明显,且聚集指数在整个研究区间上呈现出先快速上升、后缓慢下降的倒U型变化态势,并且从聚集地的分布来看,主要集中在广东、江苏和上海等东部沿海地区,且集中度不断提升。

In this paper the authors built the industry aggregation index which could be analyzed by significance test from the perspectives of kurtosis and skewness.Then,based on it,the authors measured and analyzed the aggregation level of China＇s electronic information industry from 1987 to 2007.The results show that the phenomenon of the industry aggregation of China＇s electronic information industry is significant,and the aggregation index throughout the whole study interval shows a rapid increase at first,followed by a gradual downward trend,thus exhibits an inverted U shape.And the distribution of the gathering mainly concentrates in the eastern coastal areas,including Guangdong,Jiangsu and Shanghai,and the concentration ratio is increasing gradually.