空间分割下的产业垄断效率分析及分类管制

Analysis and Control of the Monopolistic Competition Efficiency in Different Spaces

垄断由于规模经济使得在生产和完全竞争相同产量时，投入了较少的成本，从而给社会资源带了节约，使得当垄断厂商的需求弹性满足一定条件时，会比竞争更有效率。本文修改了厂商福利的计算方法，论述了空间成本影响下的厂商垄断弹性，当空间成本对产业的约束较小时，产业的集中度越高，产业的效率越大。从而得出减小空间成本约束，提高产业集中度是解决当前国内单位产出成本、能耗过多以及产业同构等问题的关键。

Monopolistic competition could be more efficient than complete competition when they get the same output because of the scale economy. By amending the calculation method of the social welfare, the paper discusses that the efficiency of the industry is much bigger and the industry is much more concentrated when the space cost has a little influence on the industry. So reducing the space cost and raising the level of industrial concentration are the keys to resolve the problems such as high unit production cost and industry isomorphism and etc.