| Under the unique climatic conditions and geographical location of the plateau,people have higher objective needs for the landscape environment.The ecological development of the landscape industry makes the importance of plants more prominent.It is important and urgent to promote the all-round development of urban landscaping.This paper aims to optimize the design of plant landscaping strategy of park green space in Lhasa,improve the living environment,improve the quality of the city,enhance the people’s sense of well-being,and make Lhasa a city with more cultural charm due to the existence of the park.Taking the main park green space in Lhasa as the research object,this paper summarizes and analyzes the general laws and existing problems of the park green space in Lhasa in plant landscaping,discusses and studies the plant configuration and landscaping,and puts forward the plant landscaping design strategy of the park green space in Lhasa.The research contents of this paper are as follows:The first chapter is the introduction,which mainly includes the background and literature review.The second chapter is the influencing factors of plant landscaping of park green space in Lhasa,which are affected by climate conditions,natural environment and human environment.The third chapter is the investigation and analysis of park green space in Lhasa.Firstly,this paper investigates the current situation of Luobulinka,Zongjiao Lukang Park,hebalin Park and Chinese culture theme park,and analyzes the plant species and ornamental nature of park green space in Lhasa.There are 105 species of garden plants belonging to 78 genera and43 families in the park green space of Lhasa,including 35 species of trees,30 species of shrubs,39 species of herbs and 1 species of vines.The life forms of garden plants in the park green space of Lhasa city include trees,shrubs,herbs and vines.The proportion of trees,shrubs and grasses of garden plants is 1.17:1:1.30,the proportion of shrubs is less,and the proportion of trees and herbs is more.The proportion of evergreen deciduous tree species in the park green space of Lhasa is 1:1.71,and the proportion of deciduous tree species is high,which is conducive to the construction of plant seasonal landscape.There are about 32 native tree species applied in the park green space in Lhasa,including 19 arbors,9shrubs,4 herbs and 73 exotic tree species,including 16 arbors,21 shrubs,35 herbs and 1 vine.The native tree species account for 30.48% of the total.There are 20 kinds of colored leaf plants in the park green space of Lhasa,including 14 kinds of trees and 6 kinds of shrubs.Colored leaf plants are mainly divided into evergreen leaf plants,spring leaf plants and autumn leaf plants.There are mainly 52 species of flowering plants in the park green space of Lhasa,including 13 species of trees,15 species of shrubs and 24 species of herbs.The flower colors are mainly red,white,yellow and purple.Secondly,it summarizes the characteristics of plant landscaping of park green space in Lhasa.First,use local plants and ancient and famous trees to create garden characteristics;Secondly,the seasonal changes of plants are used to highlight the scenery of the four seasons.Finally,this paper puts forward the current situation of plant landscaping in park green space in Lhasa.First,the application of plant species is less,and the application of local plants is generally less.We can appropriately increase the varieties of garden plants and increase the stability of plant community;Second,some plants grow badly,affecting the overall landscape style;Third,the configuration of plants is single,and the balance and unity,rhythm and rhythm are not considered in the configuration of plants,resulting in the lack of plant beauty.The fourth chapter is the landscaping strategy of garden plants in the park green space of Lhasa.Firstly,the principles of plant landscape design of park green space are put forward.The plant landscape design of the park should make the overall plan of plant landscape according to the different functions and properties of the park.Plant landscape design needs to meet the ecological benefits of plants,respect the ecology of plants,and adapt to the land and trees;Mainly local trees,combined with introduced trees from other places;Constructing scientific plant community;Consider plant collocation and planting density.Thirdly,plant landscape design should consider the needs of art and follow the principles of change and unity,contrast and harmony,balance and stability,rhythm and rhythm,proportion and scale;Strengthen the seasonal design of plants and create the image of urban landscape;Comprehensively consider the combination configuration of plant shape,color and taste.Finally,cultural principles should be considered in plant landscaping.The three forms of plant configuration are natural type,regular type and mixed type.They are embodied in the single or combined application of solitary planting,pair planting,cluster planting,row planting,group planting,flower bed and flower border.Plants need to be combined with architecture,terrain,water body and road to create a coordinated and unified landscape environment.According to the investigation results of the park and the actual situation of Lhasa,20 groups of plant configuration combinations of park green space in Lhasa are summarized.The fifth chapter is the plant landscape design of Lhasa pocket park.This paper designs the landscape of pocket park planned in Dongcheng area of Lhasa. |
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