公路边坡丁香(Syringa spp.)固土特性的研究

Highway slope cloves(Syringa SPP.) solid soil characteristic research

研究圆叶丁香、小叶丁香、北京丁香对土壤抗冲性的贡献大小,提出公路生态恢复适合的丁香种类,能够为寒区高速公路绿化植物的选用和培育提供数据资料。利用原状土冲刷水槽法对三种丁香进行冲刷,研究根系对土壤抗冲性的大小。通过对实验结果的分析,可以看出三种丁香的抗冲性各不相同,同种丁香随着坡度的增加抗冲性能力呈减小趋势;不同丁香在同一坡度下的抗冲性圆叶丁香>小叶丁香>北京丁香。利用水崩解法得到三种丁香的抗蚀指数,随着时间的推迟,抗蚀指数逐渐下降,但是针对于某一时刻,三种丁香抗蚀指数圆叶丁香>小叶丁香>北京丁香。最后测量三种丁香的根系长度和生物量,用软件处理分析可知三种丁香的根系长度和质量呈一个趋势,并且和抗冲指数、抗蚀指数的变化趋势相同。

In order to finger out the contribution of different cloves＇ influence on the soil anticorrosive resilience and the corrosion resistant, studies were carried out on potting plantation, each pot had 1 seedling, including round leaves clove, lobules cloves and Beijing clove to find out the plant root system＇ influence on the conservation of soil and water function. In this way, we may provide the data information to afforest the plants for the cold area highway selection and cultivation. It＇ s important to restore the road ecology. The research took 1 year cloves seedlings as the objects, through the potting experiment to find out the three kinds of different cloves＇ impacts on the soil resilience and corrosion resistant. The soil antiscouribilities of different root systems were identified using the undisturbed soil trough scouring method. The experimental results showed, the soil antiscourability for the same species decreased with the increase of the slope and decreased with the increase of the precipitation; at the same slope, the round leaf cloves＇ impact is biggest, the second is the lobules clove, the last one is Beijing clove. The soil anti - eclipse of different root systems were identified using the water disintegration law, along with time postponing, the anti - eclipse indexes drops gradually, but in one every minute, the round leaf clove＇ s anti - eclipse index is biggest is, next is the lobules clove, the smallest is Beijing clove. With the original part processing analysis method, we know the three kinds of clove＇s assumes have the same changes tendency in diameter level φ〈 1 mm scope root system lengths and the biomass. And it is similar with the anti -flushes the index and the anti -eclipse index. In these three kinds of cloves, the round leaf cloves＇ impact on the soil resilience and the corrosion resistant enhancement is the obvious, therefore in the highway, of Northeast area, the round leaf clove is the nice choice regarding as main plant to maintenan the road side slope ecological environment, to restore the vegetation and the conservation of soil against erosion.