A Study On The Evaluation System Of Urban Green System Based On Function Coordination

At present, there are many problems to be resolved in the urban green space system planning. Among them, a measure of urban green space system can or not meets the city’s sustained and stable development, is a primary challenge. Research show the current evaluation system is not imperfect, or too subjective, and most research only focuses on urban green space, laching of research which take it as a system. Therefore, it is significance to establish a scientific and feasible evaluation system of urban green space system. In this paper, according to the complexity of urban green space system, with its functions as basis, was analyzed by using the principle of synergetics. Then, with the help of coordination degree model, the paper research the evaluation system of urban green space system. The main research results obtained as follows:(1) After analyzing the three subsystems of urban green space system’s synergistic reaction, I find out8parameters and22parameters component, based on the theory of synergetics’s order degree concept and slaving principle. The weight parameter’s components through established the important value determination to judge. Studying on parametric component adopts quantitative and qualitative methods.(2) In this paper, the application of evaluation system is applied in Heshan. According to the method provided in the paper, first of all, this paper determine each parameter components’ threshold, then calculate its value, finally obtain Heshan’s green space system coordination degree which is0.52. All those reflect that Heshan’s urban green space system is in a state of basically coordination. In the three subsystem of urban green space system, landscape subsystem make the largest contributions, its value is0.62, while ecological subsystem make the minimum contributions, its value is0.48. Recreation and disaster-prevention subsystem’s contribution is in the middle level, its value is0.50. All of the8parameters, the green architecture of recreation and disaster-prevention, and green space’s ecological pattern have a relatively low contribution, which value respectively is0.36and0.35. Reasons for those are the distribution of recreation and disaster-prevention green space is especially unbalanced, and ecological green has a poor connectivity. Generally speaking, the result obtained by this method and Heshan’s current situation is consistent. According to the evaluation results, it points out the existence problems, and put forward the optimization suggestion.