Evaluation Method Of Ecological City Construction Based On System Dynamics

Economy is developing rapidly,and urbanization level is improving continuously.The inconsistency between supply and demand of resources is keen-edged and ecological environment is destroyed seriously.Ecological system is faced with huge pressure and severe challenges.Thus,constructing ecological city and protecting the ecological environment is of great urgent,and to realize urban sustainable development is the research prospect in future.The goal of this thesis was exploring the path of Tianjin ecological city construction.System dynamics method was used to establish simulation model of the Tianjin ecological city construction,and five different development patterns were set up through adjusting eight factors in the simulation model.The five roads were traditional development road,social development road,economic development road,resources-environment protective development road and harmonious development road,respectively.Based on the historical data from 2005 to 2013,and the year period from 2014 to 2020 was selected as simulation range,Tianjin ecological city was simulated under five different patterns to get the results of each variable.According to the principle of evaluation index system under ecological city construction conditions,the comprehensive evaluation index system of Tianjin ecological city was established combined with the present situation of Tianjin and simulation results of ecological city construction system.Besides,the comprehensive evaluation model based on the radar chart theory was applied to evaluate Tianjin ecological city construction.The future development level of Tianjin ecological city construction was carried out by quantitative evaluation,based on the simulation results of ecological city construction in five different roads.The results showed that,under the harmonious development road,the comprehensive development level of Tianjin ecological city construction would be the highest.Based on the research in this thesis,the reasonable suggestion was proposed,in order to help the ecological construction of Tianjin proceed smoothly.