贵州国省干线公路边坡植物生态防护植被恢复效果分析

Analysis on Vegetation Restoration Effect of Plant Ecological Protection of Highway Slope of National and Provincial Main Road in Guizhou

本研究以贵州国省干道G321、S308和S311公路的四个典型边坡作为植物生态防护试验示范边坡,对分别采取不同植物生态防护技术的示范边坡,进行植被恢复效果的调查分析,探讨不同植物生态防护技术存在的问题及改进的对策措施。结果表明:针对不同类型边坡应因地制宜采取不同植物生态防护技术,对石质边坡采用种植藤本植物垂直绿化技术,植被恢复效果良好;对土质边坡采用插干种植技术,能快速恢复坡面植被;对不稳定的高陡土夹石边坡采用客土挂网喷播(干喷和湿喷),可取得较好的植被恢复效果;对坡度较缓的土质边坡及土夹石边坡采用容器苗植苗技术或撒播乔灌木种子技术,也可获得良好的植被恢复效果。

In this study,four typical slopes of G321,S308 and S311 highways in Guizhou Province were taken as demonstration slopes for plant ecological protection test.The vegetation restoration effect of demonstration slopes with different plant ecological protection technologies was investigated and analyzed,and the existing problems of different plant ecological protection technologies and the countermeasures for improvement were discussed.The results showed that different plant ecological protection technologies should be adopted according to local conditions for different types of slopes.Vertical greening techniques of planting vines should be adopted for rocky slopes with better vegetation restoration effect.The slope vegetation can be quickly restored by adopting the techniques of direct slip planting for the soil slope.For the unstable high and steep soil-rock slope,better vegetation restoration effect can be achieved by using soil mesh spraying(dry spraying and wet spraying).Good vegetation restoration effect can be obtained by using container seedling planting technique or sowing technique of tree and shrub seeds on the gently sloping soil slope and soil-rock slope.