The Theoretical And Demonstration Research On Urban Construction System

City construction can accelerate city development, shorten the difference between town and country. It is the guarantee of construction of modern city system. It is the main means of city government's social economic function achievement and economic regulation. And it is the important basis of urban competence ability improvement and social economic all-sided accelerated development. Then, we must input city construction system into the whole social economic system in order that its function can fully exert, and this can carry out the concerted development of city construction and social economic. In this paper, we have researched the theory of city construction system, system form, dynamic mechanism and system emulation. And we have obvious innovation in the following aspects:Build up the system structure of city construction system. City construction system is the subsystem of city social economic system. And it has social, economic and ecological attribution. After discussing the elements of city construction system and soft and hard environment, we confirm the main restrict condition of city construction. Then, we bring forward the roadway of harmonious development and uniform optimizing of city population, resource, environment and social economic under these conditions. The roadway is constantly regulated the developing way of the system in order to find out the proper scale, speed and content of city construction. It can carry out the effective utilize of sources, constant balance of ecosystem and constant development of social economic.Set up the consequence model and structure model from macro and micro aspects. After analyzing in-depth the relationship among system elements and the developing and variation discipline of system, we give the basic mathematic formula. This is the basis of the system emulation.Set up the framework of city construction system under the theory of system, economic, continual development. City construction system is a constant variation dynamic complex system. We research on the running mechanism and aim of city construction system and analysis in-depth the inner and outer developing environment of city construction system and its harmony. This is important auspice in theory of well running of city construction system.Emulate the real city construction system of san-he city in use of system dynamic mechanism of city construction. Then, we analysis the actuality and problem of san-he city construction system and predict its developing trend. We get important reference value conclusion from the emulation.Bring forward constant development strategy, advise of policy, and the idea of construction of environment sustain system of city construction of san-he city. This research has important theory meaning and biggish reference value to city nicer development in our country.