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首页> 外文期刊>Polish Journal of Environmental Studies. >Effects of Embedded Gravel or Gravel Mulching in Southern Red Soil on Slope Sediment Yield and Runoff
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Effects of Embedded Gravel or Gravel Mulching in Southern Red Soil on Slope Sediment Yield and Runoff

机译：嵌入式砾石或砾石覆盖在南方红壤上的影响对坡沉积物产量和径流

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摘要

The red soil hilly region of southern China is affected by rainy seasons (Meiyu periods). There can be large variations of total rainfall per event and rainfall vs. time. This region is therefore sensitive to rainstorms during the Meiyu periods. Rainfall can cause soil coarsening in some areas and the resulting soil contains large amounts of gravel. This form of soil erosion is serious in southern China where there is heavy rainfall and the soil layer is thin. Gravel mulching has been shown to affect soil moisture content, hydraulic conductivity, infiltration, and evaporation. We used simulated rainfall experiments to study the effects of soil surfaces with embedded gravel or gravel mulching on slope runoff and sediment yield for Southern red soils under different rainfall intensities and slope gradients. Both gravel treatments reduced sediment and runoff vs. soil with no gravel, but the amount of reduction varied. Runoff did not consistently increase with slope gradient and rainfall rate. At low rainfall intensity, embedded gravel and gravel mulching inhibited runoff formation, but at high rainfall intensity and steeper slopes, the level of inhibition was reduced. The findings are important for soil conservation and management relative to gravel content, particularly in areas of China with substantial contents.
机译：中国南方的红壤丘陵地区受到雨季（Meiyu时期）的影响。每场比较降雨量和降雨量与时间有很大的含量。因此，该地区对Meiyu期间的暴雨敏感。降雨可能导致土壤在某些地区粗糙，所得土壤含有大量的砾石。这种形式的土壤侵蚀是在中国南部的严重，其中降雨量大，土壤层薄而薄。已显示砾石覆盖物影响土壤含水量，液压导电性，渗透和蒸发。我们使用模拟的降雨实验来研究土壤表面与嵌入式砾石或砾石覆盖对不同降雨强度和坡度梯度下南方红壤坡径流和沉积物产量的影响。砾石治疗既有砂砾沉积物和径流，土壤都没有砾石，但还原的量变化。径流与坡度梯度和降雨率持续增加。在低降雨强度下，嵌入式砾石和砾石覆盖抑制径流形成，但在高降雨强度和陡峭的斜坡上，抑制水平降低。该研究结果对于水土保持和管理相对于砾石含量，特别是在中国的地区，具有重要内容。

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  • 来源
    《Polish Journal of Environmental Studies.》 |2021年第1期|401-408|共8页
  • 作者

    Wang Hui; Lu Debao; Wang Qian; Shan Chengju;

  • 作者单位

    Zhejiang Univ Water Resources & Elect Power Coll Water Conservancy & Environm Engn Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Water Resources & Elect Power Coll Water Conservancy & Environm Engn Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Water Resources & Elect Power Coll Water Conservancy & Environm Engn Hangzhou Zhejiang Peoples R China;

    Zhejiang Univ Water Resources & Elect Power Coll Water Conservancy & Environm Engn Hangzhou Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    gravel; rainfall intensity; slope gradient; red soil; runoff; erosion; sediment;

    机译：砾石;降雨强度;坡梯度;红壤;径流;侵蚀;沉积物;

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