Strategies For The Construction Of Landscape Plant Diversity In Harbin

Diversity of landscape plant is the material foundmation which promise Green Space System to keep on sustainability and stability.However,there are some problems about diversity of landscape plant in Harbin,for example,only small number species are arranged,not only the quantity is concentrated and the comparison is not reasonable among green and broad-leaved plants,but also the plant community is similar and monotone,so adopt the census and typical model sampling method,taking totally 210 kind squares,study the conditions of plant diversity and the protection of endangered,relict plant,discuss the relationship between the diversity of Garden and Nursery to the construction and protection of landscape plant diversity.Basing on the historical evolution of Harbin landscape plant diversity,to find out the problems and optimization countermeasures for the diversity of landscape plant in Harbin,The article will has certain instruction and the reference function to establish the Harbin into ecotype landscape city.Following results:1.Garden Greenery Land,Resident Community Greenery Land,Road Greenery Land,Campus Greenery Land,Company and Government Greenery Land of eight areas are investigated in Harbin.There are 158 species plants included 110 species tree and shrub,3 species climbing plants,45 species perennial flowers and herbs.The tree and shrub species are 12.9%of all tree and shrub species of Hei Longjiang province.There are 17 species tree and 15 species shrub which are usually used,Not only the species and quantity of tree,shrub,perennial flowers and climbing plants are low,but also the plant community is similar, which influence the diversity of landscape plant and quality of plant scenery.2.The landscape plant diversity of Resident Community and Garden Greenery Land is richer than Company and Government and Road Greenery Land,The quality of landscape plant diversity is different to every Campus Greenery Land,but the average quality is not good and need to improve.The landscape plant diversity of arbor-shrub-herb and arbor-shrub is richer than arbor-herb and shrub-herb.3.In Harbin,32 Garden and Nurseries which are investigated produce 56 species tree,42 species shrub,13 species cut plant,3 species herb.Based on plant quantity,there are 36 species tree and shrub,which are rich in Garden and Nursery,The low diversity of resources and unbalance of supply—demand relation has limited construction and protection of Greenery Land plants diversity in Harbin.4.There are 78 kinds national and regional-level endangered and relict plants in Hei Longjiang province,19 kinds of endangered species are applied in the green space of Harbin. The number and frequency of endangered plants is poor in green space,there are only 17 kinds endangered plants are produced in Garden and Nursery.From the two terms,protecting plant diversity have not done enough and to be enhanced.5.Compared with the 1980 year from the historical evolution angle,the proportion of evergreen plants has reduced,which is the 24.73%of total number trees,The number of polar is highest,The number of elm which is native plant decreases.Because serious pests and diseases are not controlled better,the number of foreign species sugar maple is small,the sugar maple is not suitable to apply.The species of vertical greening plant is poor and is not get more attention.6.Against the problems of landscape plant Construction and protection,finding out the optimization countermeasures for the construction of different types Greenery Land and plant community structure,resource diversity of Garden and Nursery,the protection of endangered and relict plants,selection and exploration of landscape plants.