Optimal Selection Of Suitable Plants For Ecological Slope Protection Of Rivers In Cold Regions

River slope protection is an important link in the construction of river regulation project.The traditional river slope protection has good stability and flood capacity,but it has a serious impact on the surrounding ecological environment in the construction of the project.As a new technology,ecological slope protection plays a good role in river control project,not only has good soil and water conservation function,but also can ensure the stability of ecological environment around the project.With the increasing emphasis on sustainable development in China,the application of ecological slope protection technology is more and more extensive.At present,there are relatively few researches on the selection of plant species for river ecological slope protection in cold region.Based on the summary of the existing theory of ecological slope protection and related examples,this study selects 6 kinds of plants,such as Medicago sativa,Day lily,Potentilla chinensis,Rheum rhaponticum,Sweet cherry tree and Calliopsis,with the 15 th standard section of the main stream management project of the Songhua River in Heilongjiang province as the test area.The growth status,overall aesthetics and anti-scour ability of plants were measured by field investigation and laboratory test.The main component analysis method and spss25 software are used to calculate and analyze the test results.The results showed that Medicago sativa,Calliopsis,Sweet cherry tree and Day lily had good comprehensive effect in river ecological slope protection project in cold area,and could be used as suitable plant species for river ecological slope protection in cold area.