坡面降雨侵蚀和径流侵蚀研究
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金(49671061);中国科学院“百人计划”资助项目


A Study on Rainfall Erosion and Runoff Erosion
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    降雨侵蚀过程包括径流侵蚀作用和雨滴打击作用两个方面, 传统的单径流小区降雨试验难以区分二者对坡面侵蚀的贡献。通过双土槽人工降雨试验, 研究了降雨侵蚀和径流侵蚀的关系及二者对坡面侵蚀产沙的贡献。结果表明: 在坡度和降雨强度一定时, 坡上方来水量引起坡下方侵蚀产沙量随着上方来水量的增大而增大; 在坡度一致和坡面径流量基本相同时, 降雨侵蚀产沙量大于供水径流的侵蚀产沙量, 降雨强度增大1倍时, 坡面侵蚀产沙量增大约50%; 雨滴打击作用引起的侵蚀量占降雨侵蚀量27.2%~45.8%, 雨滴打击作用对坡面侵蚀产沙量的贡献受降雨强度和侵蚀方式的影响。

    Abstract:

    Rainfall erosion process can be divided into-different aspects,runoff washing and raindro pimpact,but their contribution to soil erosion can not be determined accurately under the condition of conventional rainfall simulation with single runoff plot.Relationships between rainfall erosion and runoff erosion and their contribution to soil erosion have been researched by using rainfall simulation with dual runoff plots.The research results show that under the same slope gradient and rainfall intensity,the sediment delivery in down-slope caused by runoff water from up-slope will increase with the increase of runoff water from up-slope.Under the condition of same slope steepness and runoff,sediment delivery caused by rainfall erosion is bigger than that caused by feeding runoff washing.Sediment delivery has increased by 50% when rainfall intensity increases 1 time. Sediment production caused by raindrop impact takes up 27.2%~45.8% of total rainfall erosion,contribution from raindrop impact to sediment production is affected by rainfall intensity and erosion pattern.

    参考文献
    相似文献
    引证文献
引用本文

郑粉莉.坡面降雨侵蚀和径流侵蚀研究[J].水土保持通报,1998,(6):17-21

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:1998-07-16
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2014-11-28
  • 出版日期: