Landscape Evaluation And Optimization Of Chengdu’s Main City Riverfront Public Green Space Based On Interactivity

Urban public green space is an important place for urban residents to carry out social interaction and public life,and is an important area for urban space research.In order to comply with the development concept of park city construction,improve the image of the city,and enhance the livability and comfort of the city,Chengdu has made efforts to create a public green space environment along the Jinjiang River,and Jinjiang Park is planned and built along the Jinjiang River as the "green axis" of the Tianfu Greenway.This paper focuses on the evaluation of the riverfront public green space in Chengdu’s main city,which has a high degree of enthusiasm.The overall public green space construction and landscape interactivity in the old urban area lags behind the new urban area due to the lack of new space and the difficulty of transformation and upgrading.This paper focuses on public green space and interactive landscape.In this paper,we start from the theory of urban public green space and interaction design,and establish a comprehensive evaluation index for interaction design in urban public green space landscape instead of studying a single landscape element.The interaction between human and landscape is analyzed at three levels of interaction experience: instinctive perception,behavioral interaction and emotional reflection,and the interaction elements of urban public green space landscape are summarized through literature research,field observation and questionnaire survey.The evaluation system was established by using AHP hierarchical analysis to select indicators from four aspects:sensory factor,spatial factor,facility factor and cultural factor,and the SD semantic difference method was used to investigate,analyze and evaluate the three sample sites:(1)Expert assignment by judgment matrix and statistical index weight values by using MATLAB software,according to the evaluation structure model,it can be concluded that the sensory factor(0.3542)within the criterion layer is the most important,followed by the facility factor,spatial factor and cultural factor,respectively,while among the 20 evaluation indexes in the sub-criterion layer,visual perception,tactile perception,spatial interest,spatial comfort,facility Among the 20 evaluation indexes in the sub-criteria layer,the weight of visual perception,tactile perception,spatial interest,spatial comfort,facility safety,facility perfection,cultural locality,and humanistic activities is higher,and the sum of the weight reaches 47.7% of the total weight.(2)The three sample sites,namely Living Water Park,Wangjianglou Park and Baihuatan Park,were analyzed by means of questionnaires,and the scores were weighted into percentages based on SD semantic analysis to obtain the total scores of the three sample sites.The second highest score was obtained from the three sample sites.The comprehensive comparative analysis of each index element shows that Living Water Park has the greatest room for improvement in the facilities factor(25.01%),Wangjianglou Park has the greatest room for improvement in the sensory factor(22.04%),and Baihuatan Park has the greatest room for improvement in the cultural factor(23.59%).(3)On the basis of comprehensive statistical analysis,a landscape interactivity evaluation study was conducted on the three sample sites to summarize the index elements to be improved in the three types of public spaces,and to propose three aspects of perceptual experience,behavioral guidance and emotional resonance to strengthen the creation of multi-sensory plants,increase the design of touchable water features,improve the level of service management,improve the space signage facilities,create all-age activity venues,improve the use of space A total of 13 suggestions were made to optimize and improve the space,such as enhancing the value of the space and highlighting the cultural characteristics of the space.The evaluation results and optimization suggestions of this study are in line with the trend of old city transformation and have practical guidance value for the interactive design of public green space in the main urban area of Chengdu,in order to provide reference and help for the future construction and transformation of urban public green space.