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测度了中国煤炭产业地理集中的五个指标:1993~2008年煤炭产业CR10和Herfindahl指数,并与美国煤炭产业进行对比,表明我国产业集中程度呈向上趋势,但总体水平低于美国,而且周期性特征更明显;1999~2007年空间Gini系数、E-G指数和M-S指数,发现煤炭产业地理上高度集中,但是迄今为止尚未形成产业集聚,外部性不明显。通过建立确定效应变截距模型考察影响煤炭产业地理集中因素,结论是资源禀赋、规模经济性和市场潜力与产业地理集中存在正相关关系,影响程度依次减弱;产业政策与地理集中程度存在负相关关系,而且目前的影响程度远远超过了普遍认为最关键的资源因素。
The five indexes of China’s coal industry geography concentration are measured: the CR10 and Herfindahl index of the coal industry from 1993 to 2008, and compared with the United States coal industry, which shows that the industrial concentration in our country is on an upward trend but the overall level is lower than that in the United States, The features are more obvious. The spatial Gini coefficient, EG index and MS index from 1999 to 2007 indicate that the coal industry is highly geographically concentrated. However, up to now, no industrial agglomeration has been formed and the externalities are not obvious. Through establishing deterministic effect intercept model to investigate the influencing factors of coal industry geography concentration, the conclusion is that resource endowment, economies of scale and market potentiality have a positive correlation with industrial geography concentration, and their influence degree decreases in turn; there is a negative correlation between industrial policy and geography concentration degree Relationship, and the extent of the current impact far exceeds the generally accepted as the most critical resource factors.