Study On Visual Quality Evaluation Of Greenway Landscape Around Qingshan Lake In Hangzhou

Greenway landscape is an important component of urban landscape,and its landscape shaping has a positive impact on improving the quality of urban space and cultural spirit.With the rapid development of society,the quality of life of people has gradually improved,and the public’s concept of life has begun to change.The demand for high-quality green recreational space is increasing.Greenways,due to their diverse landscape types and green transportation systems,and their role in promoting ecological restoration,promoting the balance between landscape and ecology,and protecting historical and cultural relics,are increasingly receiving public attention.Therefore,the visual quality evaluation of urban greenway landscape based on public perception has important significance for improving the quality of greenway landscape.This article takes the green road around Qingshan Lake in Hangzhou as the research object,divides the green road around the lake into four sections: Qinshan Wharf Wanghu Park Section(A),Wanghu Park Waterborne Forest Section(B),Waterborne Forest Taiyangwan Post Station Section(C),Taiyangwan Post Station Qinshan Port Section(D),and uses a combination of subjective and objective research methods to evaluate the visual quality of the green road landscape.Based on a survey questionnaire,beauty evaluation is conducted from the perspective of visual perception of the landscape.Image semantic segmentation technology is used to identify and quantify the landscape elements in the sample photos.Through correlation analysis,the impact of landscape elements on the beauty evaluation results in various sections of the green road around Qingshan Lake is explored,and the landscape differences in different sections of the green road around the lake are analyzed;Use regression analysis to construct a relationship model between the beauty values of each section of the green road around the lake and the overall green road around the lake and the landscape element indicators.Based on the evaluation results,propose targeted optimization suggestions for the construction of the green road.The main conclusions of the thesis are as follows:(1)The overall landscape quality of the greenway around the lake is relatively high,among which the water forest-Taiyang Bay Post Station section(C)has the best landscape quality,the Qinshan Wharf-Wanghu Park section(A)and Taiyang Bay Post Station-Qinshan Wharf section(D)have relatively average landscape quality,and the evaluation results of the greenway landscape of the Wanghu Park-water forest section(B)are relatively low.(2)The green vision rate of sections A and D of the Qingshan Lake Greenway is significantly higher than the other two greenways,with an average overall green vision rate of 44.38%.B.The visible range of the C greenway is slightly higher than that of the A and D greenways.The overall blue field of view value of the Qingshan Lake Ring Greenway is between 0% and 30%,with the highest blue field of view rate in the C-segment greenway among the four segments.The interference factor index values are mainly concentrated between 3% and 20%,and the interference factor index of the B-segment greenway is relatively high.The average visibility rate of the overall road around Qingshan Lake Greenway is24.50%.(3)The beauty value of the greenway in the Qinshan Wharf Wanghu Park section(A)is mainly affected by the sky visibility and interference factor index;The green visibility,sky visibility,and interference factor index of the greenway in the Wanghu Park Water Forest Section(B)have a significant impact on its beauty value;The blue visual field rate and interference factor index of the greenway in the Water Forest Sun Bay Station section(C)have a significant impact on the beauty evaluation value;The evaluation value of the scenic beauty of the greenway in the section(D)from Taiyang Bay Post Station to Qinshan Wharf is strongly related to the sky visibility,interference factor index,and road visibility.Based on the above research,relevant optimization suggestions are proposed in combination with the evaluation results of different segmented greenways around the lake: Improve the four seasons landscape and construct corridor space.Optimize visual elements of greenway landscape and strengthen regional landscape characteristics.Create a visual sequence of greenway landscape to improve the quality of greenway landscape.Coordinate the surrounding environment of the greenway landscape to reduce visual perception interference with the landscape.Adjust the number of scenic spots to enhance the public’s visual experience.