Landscape Evaluation Of Plant Communities Based On SBE And SD

The basic elements of plant community pine into urban park green space,its composition and structure directly affect the quality and function of green space.Taking four parks of HangZhou,Taiziwan Park,Huagangguanyu Park,Hangzhouhuapu Park,Liulangwenying Park as objects.Screening 40 typical plant communities for investigation,analyzy their plant community composition,type,structural characteristics,diversity and using python2.7 for data processing.A total of 160 photos for 40 plant community taken in spring,summer,autumn and winter.80 estimators(including 40 professions and 40 non-profession)were asked to evaluate the beauty of each photo,and the SBE values of the spring,summer,autumn and winter seasons of each plant community were obtained.40 landscape professionals evaluated 10 landscape factors such as plant species diversity,green visibility and color diversity to obtain scores for each landscape factor.SPSS Statistics 22 was used to analysis the correlation and to establish a multiple linear regression model.The results show that:1.The application frequency of Cerasus yedoensis,Acer palmatum,Salix babylonica,Lagerstroemia indica,Michelia maudiae makes the tree species clustered;the ratio of the exotic species and native plants is 1:2;the diversity of the herbaceous layer is the worst among the various levels of the plant community,and the plant diversity of the tree layer is the highest.The richness index and diversity index of the evergreen deciduous broad-leaved mixed type were the highest;the tree height distribution of the arbor layer was pyramidal,and the shrub layer was less,which led to the configuration pattern of arbor + herb;the tree with the DBH of 16 cm or less accounted for 56.89% of all trees.2.The estimators of the professional group and the non-professional group have a high consistency in the aesthetics of the plant community.The highest number of plant communities in the spring,summer,autumn and winter seasons are Liulangwenyu Park,Huagangguanyu Park,Huagangguanyu Park and Liulangwenyu Park.3.The beauty of plant communities in spring is inversely proportional to plant species diversity,cleanliness and spatial sense;it is proportional to color diversity,distinctiveness and vitality.The color is richer and the sense of the character,the vitality is stronger,the view is more beauty.The beauty of plant communities in summer is inversely proportional to the sense of hierarchy and simplicity;it is directly proportional to the diversity,naturalness and distinctiveness of plant species.The plant species is more,the more natural,the sense of beauty is stronger,the view is more beauty.The beauty of plant community in autumn is directly proportional to the green viewing rate,color diversity,spatial sense,and distinctiveness.The green viewing rate is higher,the color is richer,the space is more open,the distinctiveness is stronger,the view is more beauty.The beauty of plant communities in winter is inversely proportional to the layering,and is proportional to the green rate and cleanliness.the green rate is higher,the cleaner,the view is more beauty.The beauty of the whole year is inversely proportional to the sense of hierarchy,cleanliness,naturalness and space,and is directly proportional to the green rate,color diversity and distinctiveness.The green rate is higher,the color is richer,the sense of the character is stronger,the view is more beauty.