Study On The Public Evaluation Model Of Urban Green Space

The proposal of the construction of park city makes the city managers to pay more attention to the green space of the city.However,the research on the publicity of space is still in its infancy.In this study,based on the STAR evaluation model system(STAR Model)by Georgiana Mihaela Varna,we proposed the urban green space publicity evaluation model system(UGPE Model).In this study,we take two cities as examples: 1)Chengdu,Sichuan Province,which is the first park city proposed,a representative of metropolitans;2)Nanchong,Sichuan Province,a representative of small cities.We compared the People’s Park and Tianfu Square in Qingyang District of Chengdu,representatives urban area in metropolitans,and the Xiangru Cultural Park and Xiangru Square in Peng’an County of Nanchong.Based on the STAR and UGPE models,using qualitative and quantitative analysis,comprehensive theoretical research,and case studies.we obtained a public green space evaluation model which is applicable to our domestic cities.The main results are as follows:In the first chapter,we analyzed and summarized the current research on spatial publicity evaluation model,then determined the research content and method of this paper.In Chapter 2,we used the questionnaire with a reliability of 0.917 to screen and filter the indicators.From the 23 evaluation indicators,15 of them are selected with an importance degree greater than 4.0.Then the filtered indicators are analyzed to determine the specific evaluation method.Then the experimental design are generated based on our research aims.In Chapter 3,we analyzed 126 valid questionnaires using the analytic hierarchy process based on the established model indicators,obtained the optimal solution by iterating the random solution method of PSO initialization,and determined the global weight and dimensional weight of the indicator.The maximum weight of the logo is 0.6125,and the minimum weight of the crosswalk at the intersection is 0.1991.An optimized evaluation model weight system is constructed.In Chapter 4,we applied the public green space evaluation model est to four cases.Among them,People’s Park has the highest public score of 4.28,and the Xiangru Cultural Park has the lowest score of of 3.05(out of 5).Compared with the results of the STAR model,we demonstrated the practicability of the UGPE model.In Chapter 5,based on the results,we proposed a public green space optimization strategy of urban green space under the condition of park city.The research showed that compared with the star model,this model,combined with field questionnaires,further optimized the accurate evaluation scores.The model weight system is combined with the analytic hierarchy process to obtain comprehensive public space scores.The applicability was demonstrated based on the four cases of domestic urban green space.,Finally,we proposed the optimization strategy to the construction of park city.