| As the main place of leisure and recreation for urban residents,the landscape effect of urban park has become the focus of increasing attention.Plant is an important part of park landscape,color is an important ornamental feature of plant landscape,but also an important sign that directly affects the quality of plant landscape.The urban park near the West Lake in Hangzhou is famous for its unique garden landscape.This paper takes the plant landscape of Wenying Park in Liulangwu as the research object to analyze the characteristics of plant color changes in different seasons,the forms of plant color composition in different Spaces,the artistic construction of plant color and the relationship between public aesthetic response,etc.,in order to provide reference for the color design of plant landscape.The main research work is as follows:1.The color change characteristics of plants in Wenying Park in spring,summer,autumn and winter were analyzed,and the color was quantitatively processed by HSB color space.The results showed that:The proportion of winter and spring color system yellow system>green system>red system>blue purple system;summer color system green system>yellow system>blue purple system>red system>red system;autumn color system green system>yellow system>red system>blue purple system;The proportion of green in summer and autumn was the most,the proportion of yellow in winter and spring was the most,and the proportion of red in autumn was more than that in spring,summer and winter,which showed the intensity of seasonal changes of plant color in Liulangwanyingying Park.Purity is mainly low purity,brightness is mainly medium brightness,medium brightness tone is most suitable for human visual physiological balance.2.The color composition forms of plants in different Spaces of Wenying Park in Liulang were analyzed.The results showed that the open space was mainly dominated by the relative comparison of neighboring colors,and the colors were harmonious and unified.The color composition forms of plants in semi-open space are diverse,with the largest number of plant colors and the richest space colors.Covering space color quantity is small,purity and brightness is low;Vertical space uses complementary hue contrast to form a visual effect that sets off each other;The enclosed space can enhance the visual impact of the dense forest space with the help of the law of"area contrast"in colorology.Color difference of 100°,purity and brightness difference of 8 levels,plant color visual effect is more intense.3.To explore the relationship between plant color and public response in Wenying Park in Liulang,the SBE method was adopted to evaluate and optimize its beauty degree.The research results showed that the overall quality of plant color landscape in Wenying Park in Liulang was good,but the quality level of plant color landscape still needed to be further improved.The four seasons beauty ranking was summer>autumn>winter>spring,and the space beauty ranking was closed>vertical>covering>half-open>open.Based on the comprehensive analysis of the above quantitative data of color composition,the beauty prediction model is established as follows:SBE=-0.589+0.142RS+0.835MH_i-0.243TH_i+0.156L_i,In the formula,purity index,dominant color comparison,cold and warm color ratio,color diversity and beauty degree have the highest correlation.The color characteristics and collocation patterns of high-quality plant combinations in four seasons are summarized,so as to provide reference for optimizing plant color allocation in Hangzhou urban parks. |