Research On Species Selection And Allocation Of Slope-protecting Plants In The Towns Of Tableland Slopes Along Weihe River

In recent years, as geological disasters(landslides, mudslides, etc.) continue and the standard of living rises, people make for enhanced demand on the environment and attach more and more importance to side-slope greening and protection. Since side-slope planting has the advantages of restoring ecosystems, conserving water and soil, beautifying the environment and bringing benefit to the future generations, vegetation protection, which is applied to slope in the towns, is of great significance for the construction of environment-friendly and resource-efficient society. Combining with the climate, hydrogeologic condition and geographic characteristics of the tableland slopes along Baoji Cai Pozhen Weihe River, the thesis makes research on the selection and arrangement of slope-protecting plants in this area. The main progress is as follows:(1)Based on field surveys and analysis of current situation of road vegetation protection of the tableland slopes along Weihe River, the thesis discusses the species of slope-protecting plants in this area. Among the plants, trees mainly contain paper mulberry, black locust, platycladus orientalis, Sabina chinensis, acer monoes, ligustrun lucidum and Chinese pine; shrubs include amorpha fruticosa, euonymus, sea-buckthorn, jasminum nudiflorum and zizyphus jujube; herbages cover coronilla varia, bermuda grass, festuca arundinacea, perennial ryegrass, artemisia vestita, trifolium repens and poa pratensis; lianas contain kudzu, creepers, euphorbia humifusa and honeysuckle. These species can be used as scientific reference for further research on side-slope vegetation protection.(2)By making analysis on the allocation of side-slope plants in the towns of tableland slopes along Weihe River, the thesis draws a conclusion about the allocation of slope-protecting plants in this area.(1)When the gradient of slope is between 20 and 30 degree, slopes are stable amorpha fruticosa 10% + zizyphus jujube 10% + jasminum nudiflorum 10% + poa pratensis 20% + festuca arundinacea 40% + coronilla varia 10%. Seedlings of amorpha fruticosa point by artificial planting seedlings Amorpha, other herbs mixed grass seed on demand.(2)When the gradient of slope is between 30 and 40 degree, slopes are rather stable Euonymus 20% + forsythia suspense 10% + poa pratensis 40% + coronilla varia 20% + festuca arundinacea 10%.(3)When the gradient of slope is between 40 and 50 degree, slopes are instable kudzu 40% + creepers 20% + kochia scoparia 10% + festuca arundinacea 20% + poa pratensis 10%.(4)When the gradient of slope is over 50 degree, kudzu 30% + celastrus 30% + irons artemisia 20% + kochia scoparia10% + tall fescue10%. By selecting the best configuration mode, the thesis attempts to provide foundations for the urban(rural) ecological protection and give reference for slope greening in the similar areas.