Research On The Problems Of Urban Comprehensive Carrying Capacity In Liaoning Province

City is the symbol of human civilization, is an era of economic, political, social, cultural, scientific and comprehensive environmental development and change of focus and crystals. Along with the development of the industrialization process of urban economic activities in the city, the pressure of environment, therefore, highlighted increasingly urban development needs the support ability to continue, only rely on the strong support system can realize the social, economic and natural compound system composed of three, and then realize the normal operation of the urban system and environment system coordinated state.This thesis used fourteen cities in liaoning province as the research object, the city's comprehensive system maintenance, healthy, stable and sustainable development of urban comprehensive system, quantitative indexes, the bearing capacity of urban system comprehensive evaluation model. On the basis of complex system of city reveals intrinsic structure and characteristics. The study shows that the structure of urban per capita in liaoning province, city water quantity of air environmental quality in recent years gradually improved, but the worsening of land resources, mainly because of the city expansion construction greatly reduces the cultivated area, especially the construction of infrastructure construction, the large land occupied.According to the urban system comprehensive carrying capacity of the theoretical model and evaluation model of liaoning province city, combining the characteristics of the structure and function of the system, establishing a comprehensive carrying capacity of cities and the evaluation index system of evaluating the evaluation methods of liaoning province, city, analyzes the system capacity, the results show that:Calculation results show that the compound system of city in liaoning province, stable performance support is gradually rising trend thrust, this means that urban complex system structure is reasonable, function gradually improved. In addition, the higher level of support and help push the operation situation of natural system, the environment destruction have certain degree of recovery, and social economic development level of the subsystem, the social and economic organizations slower operation efficiency, cannot achieve city lags fairly complex system of health, sustainable development. However, the internal stress index system has been rising trend, illustrates the social economic activities of urban system to produce more and more pressure. Finally the complex system of urban comprehensive capacity index changes (index dropped to 0.84 from 0.91), which shows that the current system in liaoning province city in the development of unsustainable.According to the concept of a comprehensive carrying capacity of cities at home and abroad and no agreement concluded, this article summarizes the origin and development of capacity, and pointed out the shortcomings of the current research. And in other scholars in liaoning province based on the study of urban comprehensive capacity assessment...