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选择铜延高速公路上常见的3种护坡模式,穴状植草、挂网喷播和骨架植草护坡为研究对象,根据植被的出现频率和相对密度,用聚类分析法分别对植被恢复成效以及各个护坡模式的物种进行了分类。结果表明:在恢复成效方面,挂网喷播的效果最好,穴状护坡次之,骨架护坡较差;人工植被苜蓿、柠条、小冠花和黑麦草均处于优势种位置;其中在穴状护坡中自然植被和人工植被的种间竞争较激烈;挂网喷播模式中以人工植被苜蓿占主要部分,其相对密度要远高于黑麦草;骨架植草模式中人工植被柠条、小冠花和苜蓿为主要优势种,自然植被如地丁、胡枝子、飞廉等均是伴生种。
According to the appearance frequency and relative density of vegetation, three kinds of slope protection patterns, cave-shaped grass planting, netting spraying and skeleton grass planting slope protection are all selected on Tongyan expressway. According to cluster analysis method, Slope protection species are classified. The results showed that the effect of net spraying was the best, followed by cave protection and poor slope protection. Artificial alfalfa, Caragana korshinskii, Ligustrum lucidum and Lolium perenne were the dominant species. Among them, The natural vegetation and artificial vegetation in the slope revetment had more intense interspecific competition. In contrast, the relative density of artificial alfalfa in the net-sprayed seeding pattern was much higher than that of ryegrass. In the skeleton planting pattern, the artificial vegetation of Caragana korshinskii, Flowers and alfalfa as the main dominant species, such as natural vegetation Ditian, Lespedeza, such as flying Lian is associated with species.