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首页> 外文期刊>E3S Web of Conferences >Stabilization to prevent soil erosion using vetiver (Chrysopogon zizanioides L.) in slopes: a field case study of selected grounds at Guatemala
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Stabilization to prevent soil erosion using vetiver (Chrysopogon zizanioides L.) in slopes: a field case study of selected grounds at Guatemala

机译：稳定性以防止使用丙酮（Chrysopogon Zizanioides L.）在斜坡中的土壤侵蚀：危地马拉选定地基的田间案例研究

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The effects of Chrysopogon zizanioides (vetiver) on the hydrophysical properties of soils and infiltration rate have been determined. Thus, it has been examined the stabilization to prevent soil erosion using vetiver in slopes, studying a field case of selected grounds at Guatemala. The particle size analysis of the soil samples showed a predominant sand fraction and a plasticity index of 7.9 %. The results indicated that these soils were fairly acid with worthless salinity and non-swelling. The specific surface area, determined by nitrogen adsorption-desorption analysis, ranged from 11.7 - 15.5 m2 /g and the pore sizes between 17-160 μm, which changed to 20-100 μm, with predominant pore size around 40 μm after cultivation. The characteristics of the soils showed the presence of cohesion (2.05 t/m2) and an internal friction angle Ф = 31.69o. After the plantation, it has been found a decrease in the cohesion and an increase of the internal friction angle. The sowing of vetiver affected the infiltration characteristics of the soil. An analysis using the Kostiakov-Lewis classical model, with a mathematical fitting, has been performed. From these results, it has been deduced that the slope protected using this plant diminished its infiltration rate, being associated to the compaction caused by the plant roots. The present results demonstrated that the plantation of vetiver is effective to stabilize and prevent slopes from the soil erosion caused by severe rainfall events.
机译：确定了蛹Zizanioides（vetiver）对土壤和渗透率水性性质的影响。因此，已经检查了稳定性以防止在斜坡中使用丙种患者的土壤侵蚀，研究危地马拉的选定地面的田间情况。土壤样品的粒度分析显示出主要的砂馏分和塑性指数为7.9％。结果表明，这些土壤是相当酸的盐度稠盐和非肿胀。由氮吸附 - 解吸分析确定的比表面积，范围为11.7-15.5m 2 / g，孔径在17-160μm之间，其变为20-100μm，培养后主要孔径约为40μm。土壤的特性显示出粘合（2.05吨/平方米）和内部摩擦角Ф= 31.69O。在种植园之后，已经发现内聚力的减少和内部摩擦角的增加。播种术治疗土壤的渗透特性。已经执行了使用Kostiakov-Lewis经典模型的分析，具有数学拟合。从这些结果中，已经推断出使用该植物保护的斜率减少了其渗透率，与由植物根源引起的压实相关。目前的结果表明，醋的种植园有效稳定和预防来自严重降雨事件引起的土壤侵蚀的斜坡。

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