【作者】 赵永来； 麻硕士； 陈智；

【Author】 ZHAO Yong-lai, MA Shuo-shi, CHEN Zhi (Inner Mongolia Agricultural University, Huhhot Inner Mongolia Autonomous Region 010018)

【机构】 内蒙古农业大学机电工程学院；

【摘要】 利用可移动式风蚀风洞对内蒙古武川县农田地表进行原位测试,研究植被覆盖地表对土壤风蚀的影响。结果表明,空气动力学粗糙度随植被盖度的增加呈指数增加,摩阻速率随植被覆盖呈二次曲线增加,使地表土壤的抗风蚀作用增强;风蚀量随植被盖度的增加呈指数减少,植被盖度大于30%时,其防风蚀效应显著。更多还原

【Abstract】 By means of the movable wind tunnel, It was finished the test of the original position to the ground surface in Wu chuan county of Inner Mongolia and studied the Influences of vegetation coverage on wind erosion. The results indicated that the anti-wind erosion influence of ground surface soil increases under the condition that aerodynamic roughness length increases exponentially and shear velocity increases according to quadratic curve with vegetation coverage increasing. At the same time, It was found that the effect of anti-wind erosion was obvious when amount of soil wind erosion decreases exponentially with vegetation coverage increasing and the vegetation coverage surpasses 30%.更多还原