Economic Analysis Of The Distribution Of Urban System

There were a hot topic of how to develop urbanization in our country in a long time. Some people think that we should develop big city. Some people insist that we should develop middle city. Some people urge that we should develop little town. Our policy of urbanization were influenced by these viewpoints by the most. But they give rise to many problems. The author of this thesis is inclined to the viewpoint of pluralistic. But he insist that we should develop all kinds of cities in same time and erect rational the city system.Now many books and writings of city system have cognizance of the significance of the urban systemic distributing. In the same time they discussed how to erect rational the city system. But they are short of analyze of systemic existence. It is almost blank for their research about trade cost among different cities.It is the most principal part in national city system that we distinguish big city, middle city and little city in the term of administration levels. There are big city, middle city, little city and town in city system. This practice has profound economic reasons. In the condition of absolute marketing economy, the city system can come into being the best excellent pyramid city level structure. And it has the most significant trade efficiency and is a Pareto optimality. It is also testified by the Yang model about city level structure. The article analyzed the economic nature of the exceed level trade, the uneconomic nature of the interlayer level trade and the economic nature of equity. This testified the inevitability of the urban systemic distributing.The city scale expanding leaded by the government is the trap of city system changing in our country. If we construct reason city system, it is the right urbanization way that the government is the lead and market is the dominant. On the one hand, market mechanism is the basic regulating mode of population transplant and city system changing. On the other hand, our government should plan as a whole and layout with reason in order to promote all kinds of cities developing with harmony.