| Urban wetland park is a special park that integrates ecological benefits,aesthetic values,and social values.It is an important place for people to carry out activities such as tours,leisure,entertainment,and popular science education.During the construction of an urban wetland park,the beauty of the plant landscape will directly affect the park landscape quality.At present,most of the studies related to the beauty of plant landscapes in urban wetland parks stay at the level of qualitative recommendations based on subjective evaluation.Therefore,based on the subjective evaluation,this study establishes a correlation system that includes objective factors as indicator layers and proposes quantitative It is necessary and meaningful,and the results can provide a concrete reference for the preliminary design and later maintenance management of the urban wetland park plant landscape.This study takes the plant landscape of Bailuwan National Urban Wetland Park as the research object,adopts field survey method,and selects a total of 44 plant landscape plots of Bailuwan National Urban Wetland Park according to the tour route.Combining ecology and garden aesthetics theory,community survey and data analysis are carried out on sample plot plants,including family,genus,species statistics,life style analysis,species source analysis,ornamental feature analysis,and component analysis of each layer.Based on the statistical analysis data,the Scenic Beauty Estimation Procedures(SBE)beauty evaluation method is used to evaluate the beauty of the plant landscape in the selected sampling site,and the different vertical structures and different spatial morphology typical plots are compared according to the score,according to the analysis As a result,13 factors influencing the beauty score were extracted.In order to make the indexes in the correlation system more comprehensive,the statistical method of "establishing a correlation system through dimension reduction" is adopted,and an intermediate layer is added to the traditional correlation system,which are four aspects of ecological beauty,form beauty,color beauty,and layered artistic conception beauty;Based on the 13 factors that have been extracted in the previous section,a total of 20 landscape factors were determined as index layers based on the previous research.Using the SBE score as the target layer,the beautiful landscape correlation system of plant landscape in Bailu Bay National Urban Wetland Park was established.Use Microsoft Office Excel 2013 and IBM SPSS Statistics 24.0 software to perform statistical and multi-element linear regression analysis between each layer of the correlation system,explore the correlation between each impact factor and the beauty of the plant landscape,and find the top 9 according to the contribution value Factors,combined with the comparison results of typical plots,finally obtained the suitable range and plant configuration model of urban wetland park plant landscape impact factors,and improved and reconstructed some low score plots.The research results are as follows(1)The sampling site of the plant landscape of Bailuwan National Urban Wetland Park is divided into grassland type,shrub-grass type,tree-grass type and tree-grass-grass type according to different vertical structures.;According to different forms of space,the plot is divided into semi-open space type,open space type,vertical space type,covered space type,and closed space type,24,9,5,2,and 4 respectively.The internal spatial form of the park is mostly semi-open,while the layout mode is mainly Tree-Shrub-Grass and Tree-Grass.(2)The overall situation of the plant community in the selected sampling site: a total of 145 vascular plant species in 66 families and 132 genera were found.The dominant families are: Compositae,Gramineae,Rosaceae,Leguminosae.(3)The visual experience of the plant landscape is shown by the viewing characteristics and time sequence.In terms of ornamental characteristics,the ornamental plants in the park are mainly for viewing flowers and foliage.There are 35 species of ornamental plants,25 species of foliage plants,9 species of fruit plants,3 species of other ornamental characteristic plants,and 75 species of plants with insignificant ornamental characteristics.It is recommended that the park add more ornamental types of fruit and branches.In terms of viewing timing,the results show that the seasons are observable throughout the year and are in a more reasonable state;the main viewing season is summer and autumn,with the most ornamental tree species accounting for 66% of the total,while spring is a lively season that can be viewed There are few kinds,so it is recommended to increase spring flower varieties appropriately.(4)According to SPSS linear regression analysis,the contribution values of the four subjective scoring factors in the middle layer are ranked from high to low as: morphological beauty> ecological beauty> color beauty> level artistic conception beauty.It shows that the public pays attention to the overall shape of the plot when viewing the plant landscape,and needs to carefully design the overall appearance when creating the plant landscape.The top 9 rankings of the contribution factors of impact factors in the index layer are: average viability> forest canopy quality> tree grass coverage ratio> tree total shrub coverage> improvement of ideal realm> time of viewing period> total number of types of viewing features > Vertical layers> Proportion of native plants.Explain that the public is most concerned about the overall vitality and the quality of the canopy line when enjoying the plant landscape.Therefore,in the design of plant landscapes,the plants should be displayed in a state of vitality and vitality,and maintenance and management work should be done.Pruning and cutting leaves should be performed regularly to supplement nutrition;at the same time,in order to reduce costs,you can try to choose native trees with low maintenance requirements;A variety of crown-shaped and leaf-shaped plants can be used for staggering and planting in a dense and dense manner to create a beautiful canopy line.(5)Based on the above results and analysis,and aiming at the existing problems of Bailuwan Urban Wetland Park,quantify or characterize the suitable range of the 9 landscape factors with the largest contribution value,and put forward a plan to enhance the plant landscape.In this scheme,the recommended range of quantitative impact factors is: tree cover ratio 0.5-1.0,tree cover total coverage 0.6-1.1,viewing period duration 6-12 months,total ornamental feature types 3-6,vertical layer 2-4 layers,with native plants accounting for 0.7-0.9.At the same time,choose the most adaptable tree species in plant configuration,and carry out regular maintenance and management;use plants of different specifications,heights,and crown types for dense and dense planting to create beautiful canopy lines;"," Color "," scent "," shadow "four levels to enhance artistic conception.Use the lifting scheme to carry out the lifting and transformation design of the low-score plots of various space types. |
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