Study On The Selection And Configuration Of Slope Green Plants In The Three Phase Project Of Beijing Section In JingCheng Highway

Side slope greening and plant root growth is essential for the ecological restoration of highway slope, strengthen the soil anti scourability and slope stability of soil structure and have a positive role. In order to understand the China north slope greening plant species, this study puts forward the reasonable selection and arrangement of plants, this study in Beijing Chengde Expressway three sections of the artificial restoration of the natural slope and the slope restoration set 12 sample plots, were determined by interspecific association and correlation analysis method. According to the different site types, application level analysis to establish the evaluation model, to put forward the proper plant selection and configuration.Results show that:(1) in the study area a total of 78 species of plants, belonging to families and 36 genera and 64, Leguminosae, Gramineae and Compositae plant, according to the determination of interspecific association and correlation analysis,31 species of slope plants are divided into six categories. (2) according to the principal component analysis and cluster analysis will be divided into 4 site, combined with the characteristics of different site conditions. Analytic hierarchy process analysis method in the optimization of the plant, more than 20 kinds of;Among trees,Ailanthus altissima and Robinia pseudoacacia best, were more than 0.7, the rest of the comprehensive evaluation for I trees as the torch tree, Cotinus coggygria and ash, scores were more than 0.6 points. (3) according to different types of slope, according to the determination of interspecific Association and correlation analysis, choose positive association of the strong advantage of plants to put forward scientific plant configuration, Beijing bearing highway side slope greening of provides a theoretical basis.