| Because of the dense population activity,the ground space available for greening is becoming more and more limited,the most of which is hard and elevation space.It is an indisputable fact that the conventional scale greening can not be carried out in this kind of area at present.In the urban space with forested buildings,there are hard landscape everywhere.It is urgent to soften and improve the green vision rate.It is difficult to guarantee the growth of plants in the hard space.Therefore,the proportion of plants in the built area is very small.It is necessary to explore new paths to expand the greening in the central urban area.As the green carrier of modern city,portable garden is the transformation of traditional ground planting greening form.It does not occupy a large amount of ground space,but provides a large number of open shared space for the city.It can flexibly arrange gardens according to the site and space environment,giving the city green and vitality.Based on the literature research and field investigation,according to the application status of portable gardens in Shenyang,the field investigation and statistics of four types of landscape in squares,streets,parks and residential areas in Shenyang were carried out.The species composition of portable gardens plants in Shenyang was summarized as 26 families,37 genera and 40 species,among them,herbaceous flowering plants are the main type of portable gardens,supplemented by foliage plants.According to the survey data,the plant species and application frequency,container material and form,and landscape ornamental characteristics of various portable gardens application sites in Shenyang were analyzed,and the differences in the construction of portable gardens landscape were analyzed.Based on the full investigation of Shenyang portable gardens,48 landscape samples were selected by taking on-the-spot photographs as the evaluation objects of this study.The landscape quality of Shenyang portable gardens was evaluated by the method of scenic beauty.The landscape preferences of professional difference evaluators and people's aesthetic preferences for different places and different application forms of portable gardens were obtained.According to the average beauty degree,the places are arranged in order of Park portable gardens(0.2634)> square portable gardens(0.1274)> Street portable gardens(-0.1559)> residential portable gardens(-0.2362).It can be seen that portable gardens is better in parks and squares,but worse in streets and residential areas.According to the average beauty degree,the order of different application forms is: combination flower art(0.6526)> flower bowl(-0.1870)> flower trough(-0.1879)> flower box(-0.3726)> flower pot(-0.4244),There were significant differences between the application forms of combinedflower art and other landscape types,but there were no significant differences in the landscape of flower bowl,flower trough,flower pot and flower box.This paper evaluates and analyses the quality characteristics of portable gardens landscape in Shenyang by means of semantic analysis.According to the sample characteristics,referring to relevant literature and consulting experts,10 landscape factors are selected,including plant factors: plant species diversity,plant color richness,plant color brightness,plant morphology beauty,container factors: container shape,container material,container can be used.Mobility,overall factors:landscape integrity,landscape attraction,landscape level richness.The evaluator is 50master's degree students in landscape architecture of Shenyang Agricultural University.Through graphic comparative analysis,the quantitative results of portable gardens landscape in various places are obtained.Combining the above landscape factors with SBE values,through the correlation analysis and multi linear regression analysis,the landscape factors with significant correlation were screened out,and the multivariate regression equation of portable gardens landscape evaluation was established.SBE =-0.366 + 0.101 × Plant color richness + 0.203 × Plant morphological beauty + 0.158 × Container shape + 0.346 × Landscape integrity + 0.301 ×Landscape level richness.The results show that the richness of plant color,the beauty of plant shape,container shape,landscape integrity and the richness of landscape hierarchy are positively correlated with the beauty.In the landscape construction of portable gardens,the richer the plant color,the more beautiful the plant shape,the more beautiful the container shape,the higher the landscape integrity,and the richer the landscape hierarchy,the more beautiful the overall landscape.Based on the evaluation model and the application of regional landscape,the problems of aesthetic quality of portable gardens in various places were analyzed,and the core of portable gardens in Shenyang was summarized: the configuration of portable gardens landscape in some places in Shenyang did not fully understand the site environment and clear greening status,the landscape design lacked thematic orientation,and the shape of portable gardens plants was not beautiful.In some places,the florescence matching and color matching of plants are inconsistent or lack of post-maintenance management,resulting in disorderly phenomenon;the container shape is single,and the plant and container landscape are not well integrated into the surrounding environment,affecting the overall landscape effect.This paper evaluates and analyses the quality of portable gardens landscape in Shenyang from many aspects,and puts forward the strategy of landscape construction in combination with theactual situation,in order to provide theoretical support for the landscape design of portable gardens in the future and apply the evaluation model to practice. |
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