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首页> 外文期刊>Archives of Agronomy and Soil Science >Effect of particle-size distribution on wind erosion rate and soil erodibility.
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Effect of particle-size distribution on wind erosion rate and soil erodibility.

机译：粒径分布对风蚀率和土壤侵蚀性的影响。

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摘要

Wind erosion is a serious problem, especially in arid and semi-arid regions. This study was conducted to assess the effects of wind speed as well as soil particle-size distribution on erosion rate (ER) using a wind tunnel. For this purpose, two clay loam soil samples (C2 and C10) in addition to a sandy clay loam (S2) were exposed to different wind velocities of 2, 9 and 18 m s-1. The result showed that erosion rate increased significantly with increasing wind speeds. In addition, a critical diameter of 0.84 mm for soil particles was supported; for larger particles the changes in erosion rate were negligible. Furthermore, soil erodibility (K) was determined, which for S2, C2 and C10 was 57.73, 10.27 and 1.43, respectively. To predict soil erodibility, a power relationship as K=3.382 MWD-1.732 (R2=0.99) was established. The results indicated with increasing wind speed, the sensitivity of S2 remained constant, whereas C2 and C10 resisted wind speed. The finding of this research indicates the importance of particle-size distribution on wind erosion rate as well as soil erodibility.
机译：风蚀是一个严重的问题，尤其是在干旱和半干旱地区。进行这项研究的目的是使用风洞评估风速以及土壤粒度分布对侵蚀速率（ER）的影响。为此，除了砂质壤土（S2）外，还将两个粘土壤土样品（C2和C10）暴露于2、9和18 m s -1 的不同风速下。结果表明，侵蚀率随风速的增加而显着增加。此外，土壤颗粒的临界直径为0.84 mm。对于较大的颗粒，腐蚀速率的变化可以忽略不计。此外，确定土壤可蚀性（K），对于S2，C2和C10，土壤可蚀性（K）分别为57.73、10.27和1.43。为了预测土壤的可蚀性，建立了幂关系为K = 3.382 MWD -1.732 （R 2 = 0.99）。结果表明，随着风速的增加，S2的灵敏度保持恒定，而C2和C10抵抗风速。这项研究的发现表明粒度分布对风蚀率以及土壤易蚀性的重要性。

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