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首页> 外文会议>International conference of international conference on combating land degradation in agricultral areas >Study on the Correlation between Sediment and Slope Pattern under Different Site Conditions by Experiment
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Study on the Correlation between Sediment and Slope Pattern under Different Site Conditions by Experiment

机译：实验研究不同现场条件下沉积物与坡度模式的相关性研究

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摘要

Sediment and slope erosion patterns of bare land、agricultural land、Alfalfa grassland and Amorpha land were studied under rainfall intensities of 90mm/h with 20°slope gradient using simulated rainfall experiment. The results showed that sediment yields of Alfalfa grassland and Amorpha shrubland were much lower than bare slope and agricultural land,and the generation time and growth rate of pit and rill under Alfalfa grassland and Amorpha shrubland conditions were much slower than that under bare slope and agricultural land conditions: With the rainfall time,sediment yield and rill-wide showed a rapid increasing trend in the previous period and then reached a steady fluctuations state. The rill-deep kept an increasing trend with rainfall time through the whole process, the difference was that the rill-deep increased faster previously but later increased slowly; Based on the comparison by three-dimensional laser scanner the severity of erosion increased with the slope length, and the surface erosion thick and rill-deep showed a fluctuate trend with slope length, but the amplitude of surface erosion thick is opposite with that of the rill-deep.
机译：利用模拟降雨实验，在90°坡度梯度的降雨强度下研究了裸陆，农业用地，苜蓿草原和金属土地的泥沙和坡侵蚀模式。结果表明，苜蓿草地和灌木丛的沉积物产量远远低于裸露的坡和农业用地，而苜蓿草原和金属灌木状况下的坑和瑞氏植物的发电时间和生长速度比裸露坡度和农业落后于此土地条件：降雨时间，沉积物收益率和丽重大线在前一段时显示出快速增长，然后达到稳定的波动状态。通过整个过程，瑞尔深度趋势随着降雨时间而越来越趋势，差异是，梯级深入增长更快，但后来缓慢增加;基于三维激光扫描仪的比较，侵蚀的严重程度随着坡度的增加而增加，表面侵蚀厚度和溃流深度显示出斜坡长度的波动趋势，但表面侵蚀厚度与之相反爬气深。

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