Research On The Plant Landscape Around The Pavilion In Hangzhou West Lake Scenic Area

In Hangzhou West Lake Scenic Area,there are many scenic pavilions,either historic sites or scenic spots,with various forms and postures.The location and design of the pavilion endow it with an artistic conception of natural artistic conception.After ingenious configuration and careful collocation,the plant landscape around the pavilion forms a staggered volume difference and a virtual and physical perception effect with the pavilion in terms of shape and appearance,making the pavilion skillfully transition and naturally connect with the surrounding environment.The research takes the plant landscape around the scenic pavilion in the West Lake Scenic Area as the object,starting with the species composition and visual ornamental characteristics of the plant landscape,and through a combination of theoretical research and field research,selects 50 scenic pavilion sample plots to statistically analyze the species composition characteristics of the plant landscape in the garden environment and the scale information between the scenic pavilion and the plant landscape,while comprehensively evaluating the visual ornamental characteristics of the plant landscape around the scenic pavilion,And then explore the quantitative data of the plant landscape around the pavilion.The main research results are as follows:(1)There are 63 species of arbor plants,which belong to 40 families and 50 genera,and 40 species of shrubs,which belong to 25 families and 32 genera.The index of measuring species diversity in the arbor layer is higher than that in the shrub layer.The species with an application frequency of more than30% in the arbor layer of the plant landscape include Osmanthus fragrans,Acer palmatum,and Cinnamomum camphora.The top three species with important values are Cinnamomum camphora,Osmanthus fragrans,and Acer palmatum,with 13.53%,9.57%,and 7.93%,respectively.As the flower of Hangzhou,Osmanthus fragrans ranks high in important values,and has the highest application frequency,with 54.0%.The shrub layer has an application frequency of more than 30%,including Nandina domestica,Camellia japonica,and Rhododendron simsii,and the important values of the three are ranked in the top three,with 13.29%,11.20%,and 11.04%,respectively.The shrub with the highest application frequency is Nandina domestica,with a frequency of 50.0%.(2)The number of evergreen and deciduous trees and shrubs in the architectural environment of the Jingting Pavilion accounts for 66.75%,and the number of deciduous trees and shrubs accounts for33.25%.From the allocation ratio,there are 16 sample plots in which the ratio of evergreen and deciduous trees and shrubs is less than 1,accounting for 32%,and 34 sample plots in which the ratio of evergreen and deciduous trees and shrubs is greater than 1,accounting for 68%.The allocation ratio of evergreen and deciduous trees and shrubs is mostly distributed within the range of [1,3.5],with evergreen plants accounting for a large proportion in the community.The tree and shrub layers in the plant landscape are mainly composed of the first and second floors,and the tree height is mostly distributed in the range of [0,10](unit: m).The ratio distribution between the tree and the building height is mainly concentrated in the range of [0,1],mostly around 0.6,accounting for 56.5%.That is,the tree height is around 0.6 times the height of the landscape pavilion,which is more generally coordinated;Small and medium-sized trees with a plant crown diameter between [0,10] account for a large proportion,and plants with different crown diameters are mostly between 2 and 6 meters away from the landscape pavilion;The value of plant coverage is mainly distributed in the [0.6,0.8] interval,accounting for the largest proportion,which is 36%.The plant community in this interval is in a relatively stable state,leaving a certain amount of plant growth space to provide a relatively suitable space for crowd activities.(3)The criteria layer of the plant landscape evaluation index system based on AHP method is plant configuration,site environment,and cultural artistic conception,and 12 evaluation indicators are selected as the factor layer.The AHP-TOPSIS method was used to determine the index weight,and the plant landscape was ranked and graded.The highest weight of the humanistic artistic conception index was 0.5396,indicating the importance of humanistic artistic conception for the design and visual perception of the plant landscape around the pavilion;According to the classification of landscape quality levels,there are 5 plant landscapes that belong to level I,16 plant landscapes that belong to level II,25 plant landscapes that belong to level III,and 4 plant landscapes that belong to level IV;The plant landscapes of different types of scenic pavilions are mostly distributed at various levels,most of which belong to Class II and III,with overall good quality and a high level of plant landscape.