| According to the layout rules of garden design,planting design is the process and methods of the arrangement of various planting types,using different types and species of garden plants,based on the principle of scientificity andartistry.Garden plants play a significant role in garden design.Its posture,flowers,leaves,fruits,and other characteristics of the ornamental value and the configuration of plants,basically decide the urban green landscape and the style of the characteristics of the effect.Perfect planting design should not only consider the characteristics of growth and development of plants,ecological relationship between plants and habitats and other plants,but also meet the demand of landscape function,aesthetic and visual principles,whose ultimate aim is to create a beautiful and comfortable garden plant landscape and plant space environment for people to enjoy,recreation.This paper combines the theory with the practice,based on a large number of domestic and international research on the application of urban greening plant resources and planting design cases and development trends.The paper takes Heyuan C ity who aims to create a National Garden C ity as an opportunity to participate in the investigations and researches of current status of urban green space and landscape application resources,downtown famous trees and biodiversity resources in Heyuan C ity.A comprehensive investigation of the Heyuan urban parks and green square,green roads,and garden green,green residential area,scenic area and wetland,a comprehensive grasp of the situation of Heyuan C ity green plant resources application and landscape planting design,combines with the data collection and analysis and draws the following main conclusions:(1)There are 66 common garden plants in Heyuan C ity,and the evergreen arbors,whose using frequency reaches over 10%,including Bischofia javanica,Alstonia scholaris,Osmanthus fragrans Lour,magnolia alba,C innamomum camphora Presl,Mangifera indica,Ficus microcarpa,Ficus benjamina,Bauhinia blakeana,and Roysto nea regia(K unth)O.F..Deciduous trees include Terminalia amtay and Bombax ceiba.Evergreen shrubs consist of Duranta repens cv.Dwarf Yellow,Loropetalum chinense var.rubrum,Fagraea ceilanica,Ficusmicrocarpa cv.GoldenLeaves,Rhododendron pulchrum Sweet,Carmona microphylla(Lam.)Don,Ixora chinensis Lam.,Hibiscus rosa-sinensis Linn.,Schefflera octophylla(Lour.)Harms,Calliandra haematocephala,Duranta repens cv.Variegata,C ycas revoluta Thunb.,Excoecaria cochinchinensis Lour,Livistona chinensis(Jacq.)R.Br.,Senna surattensis(Burm.f.)H.S.Irwin et Barneby,Pittosporum tobira,Schefflera microphylla Merr..Deciduous shrub includes Plumeria rubra.(2)The green plants in Heyuan C ity show diversity.There are 132 families,342 genera and 545 species of green plants in Heyuan C ity consisting of 4 families,5 genera and 5 species of ferns,10 families,13 genera and 19 species of gymnosperms,118 families,324 genera and 521 species of angiosperm(102 families,255 genera and 425 species of dicotyledon;16 families,69 genera and 96 species of endogen),which occupy 17.91% of Heyuan vascular plant resources.There are 119 ancient and famous trees in Heyuan downtown and its main species are Ficus microcarpa,Dimocarpus longan Lour.,Bocote,Bombax ceiba,Litchi chinensisa and other 25 species belonging to 19 families and 22 genera.(3)The reaches shows that there are still some questions in application of green plants in Heyuan C ity,including plant resource shortage,improper choice of plant variety,single cropping configuration,seasonal landscape monotonous and lack of cultural artistic expression and local characteristics.The corresponding measures are as follows: strengthening the introduction and domestication of native plants,promoting the application of Hakka plants,enhancing the Hakka cultural characteristics of plant image expression,improving the level of landscape planting design,strengthening the cultivation of natural plant community structure and the configuration of the appropriate ratio To scientific and reasonable.strengthening the introduction and application of color leafed plants rich landscape,seasonal changes and the roof greening and three-dimensional greening,enriching green space structure,and increasing the rate of green space and green.(4)Proper plant species.With the rapid development of urban landscape construction in Heyuan C ity,the construction of urban green space landscape,which is closely related to the construction of ecology and culture,has become the direction of future development.Based on the climate characteristics of Heyuan C ity,the growth characteristics of the characteristics of Heyuan Hakka culture and plant landscaping,the writer recommends suitable plants(containing 21 families and 36 species)for Heyuan City.They are 32 families and 66 species of flower,Joe,irrigation,ground cover plants,and 14 families and 21 species of color and color leaf trees,a total of 49 families and 122 species and other 18 families and 21 species of good landscape effect of native plants.The paper puts forward the improvement measures,based on the investigation of Heyuan C ity in different greenbelt types,choosing different types of green space as the research object and analyzing the shortcomings of landscape,combining the Hakka culture and the historical significance in Heyuan C ity and which provides guidance for the construction of modern landscape garden C ity with local character istics of Heyuan C ity,and draws lessons from the development of South of the Five Ridges Garden C ity. |
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