Study On The Ecological City Construction Mechanism And Simulation

The accelerated industrialization and urbanization makes ecological environment a great issue in urban development. It is a consequence of coordination between human beings and the nature. The concept of ecological city serves as a rational and reasonable urban development mode, with its solution to urban ecological issues. It draws attention from the experts and decision-makers. In China, more than160cities have come to construction of eco-cities.Eco-city is an ideal while not a practice to the theorist and academia. The author studies "construction of ecological city" in view of practice and theory instead of its concept, definition, meaning, purpose and future. Eco-city is a city designed with consideration of environmental impact, inhabited by people dedicated to minimization of required inputs of energy and waste output, on the way towards health, harmony and sustainable development through innovative design, optimized structure, good balance, reasonable control and coordinative evolution. It can help coordination of resource, environment, economy and society. The study on "construction of eco-city" goes around city, an open and complex huge system oriented towards human beings, which is a dynamic and non-linear intermediate process while not a single and static consequence. The author will study its system operation, mechanism of action, operation procedures, practice, evaluation system, simulation and solutions.First, the author review domestic and foreign literature on theory and practice of constructing eco-city. On the basis from the view of economics, ecological economics and system engineering, the author explains and analyzes the structure, logics, action, coupling and evolution between elements and factors of eco-city, the complex huge system. It is whole-new to study eco-city in view of structure coordinative balance, entropy change and dissipation and dynamic synergetic evolution.Second, the author makes survey and collects data and information on circumstance, economic growth and social progress in Harbin, and analyzes the measures, consequence, problems, weakness, opportunities and challenges from1999and2002, when Harbin put forward the goal of eco-city and made the plan. In light of the eco-city, the author formulates evaluation index system from the aspect of high-efficiency resource, economic growth, social civilization and friendly environment with respect to the original data from2000to2010. AHP model is used to qualitatively and quantitatively evaluate the construction level of eco-Harbin.Finally, the author formulates system dynamics simulation model of the eco-city, and quantitatively predicts and controls complex dynamic systems of Harbin eco-city. On simulating the coupling model of cause and effect of close subsystems including that of population, economy, resources and environment, the author predicts the trend of construction and development of Harbin eco-city in the future20years.4control factors are defined, which have effect on construction of eco-city and are critical to optimize construction speed and path of eco-city. With respect to optimized regulatory program and problems emerging in the process of evaluation and simulation, the author proposes construction of modern "five in one" eco-city, a healthy and sustainable economic and security system, efficient and democratic political and security system, green environmental protection system, orderly regulation of the rule of law security system, security system diversified culture of innovation, to provide a reference for the government to implement the eco-city policy.In general, the study is useful both in theory and practice in its action mechanism, evaluation, simulation and control, and policy guarantee in construction of eco-city.