地理学报

地理学报 ›› 1998, Vol. 53 ›› Issue (5): 422-428.doi: 10.11821/xb199805005

• 论文 • 上一篇    下一篇

黄土坡面不同侵蚀带侵蚀产沙关系及其机理

郑粉莉, 康绍忠   

  1. 中国科学院水利部水土保持研究所,陕西杨陵712100
  • 收稿日期:1996-12-01 修回日期:1997-05-01 出版日期:1998-09-15 发布日期:1998-09-15
  • 基金资助:
    中国科学院“百人计划”;国家自然科学基金(49671051);国家人事部留学基金

EROSION AND SED MENTY IELD IN DIFFERENT ZONES OF LOESS SLOPES

Zheng Fen li, Kang Shaozhong   

  1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling﹒Shaanxi 712100
  • Received:1996-12-01 Revised:1997-05-01 Online:1998-09-15 Published:1998-09-15
  • Supported by:
    Suppored by the 100-talents project,Chinese Academy of Sciences,the National Natural Science Foundation of China with project No.49671051 and Foundation of Personnel Ministry of China for Returned Scholars

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被引次数

126 | 44

摘要： 黄土梁峁坡面土壤侵蚀具有明显的垂直分带性，不同侵蚀带具有各自的侵蚀产沙特点，且彼此相互影响。坡面侵蚀产沙分配受降雨强度和降雨能量的制约，随着雨强和降雨能量的增加，坡面侵蚀产沙量的最大部位由细沟侵蚀带向浅沟侵蚀带过渡，坡面侵蚀产沙强度变化的本质为侵蚀方式的演变。坡面复合侵蚀带的径流模数明显小于对应的单一侵蚀带径流模数，而其侵蚀模数则明显大于对应的单一侵蚀带侵蚀模数。溅蚀片蚀带的来水来沙可使细沟侵蚀带的侵蚀产沙增加21.5%;片蚀+细沟侵蚀带的来水来沙使浅沟侵蚀带的侵蚀产沙量增加16.7%～80.6%,上部侵蚀带来水来沙对下部侵蚀带产沙的影响与上部来水的含沙量、增水系数、降雨特征及下垫面的侵蚀发育密切相关。

关键词: 黄土坡面, 侵蚀带, 侵蚀产沙

Abstract: Soilerosion on loess slopes has clear vertical zonation.Eacherosion zone has its own characteristics of erosion and sediment yield,and the zones tend to have mutual influence.The intensity and energy of rainfall affect the distribution of eroded sediments on a slope.As rainfall intensity and energy increase,the location of maximum sediment yield changes from the rillerosion zone to the shallow gully erosion zone.The intensity of sediment yield changes with different modes of erosion.

Key words: erosion and sediment,loess slope,erosion zones

中图分类号: 

  • P931.6