植被覆盖对丘陵地区产流产沙过程的影响研究

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作者简介 朱翔宇（1992—），男，河北正定人，工程师，主要从事水利水电工程、水文水资源研究。

收稿日期 2023-07-30

Study on the Impact of Vegetation Coverage on the Process of Runoff and Sediment Production in Hilly Areas

Zhu Xiang-yu （Shijiazhuang Hydrological Survey and Research Center of Heibei Province， Shijiazhuang， Hebei 050051）

Abstract In order to study the effect of vegetation coverage on slope erosion in hilly areas under different rainfall intensities， this paper studied the effects of vegetation coverage on slope erosion under different rainfall intensities， the dynamic change process of runoff and sediment yield. The results show that： （1） rainfall intensity and vegetation coverage have significant effects on runoff and sediment yield. When the vegetation coverage is below the critical value of 45%， runoff will increase significantly; （2） when the vegetation coverage rate reaches 45%， the runoff and sediment yield on the slope is obvious， and the change range decreases with the increase of the vegetation coverage rate; （3） under the same rainfall intensity， the rate of sediment yield on slope increased sharply at first and then decreased gradually， and the higher the vegetation coverage， the higher the rate of sediment yield decline. The above research can provide reference for soil and water conservation in hilly area.

Key words Simulated rainfall; Vegetation coverage; Runoff; Sediment yield intensity

摘要 為了研究在不同强度降雨下，植被覆盖对丘陵地区坡面侵蚀的影响，通过人工模拟降雨试验，研究了在不同植被覆盖率条件下，坡面径流量和产沙量动态变化过程。（剩余4945字）

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