Dynamic Mechanism of Soil Detachment by Shallow Flow on Slope

TANG Ke-ming; ZHANG Guang-hui; REN Zong-ping

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Dynamic Mechanism of Soil Detachment by Shallow Flow on Slope

更新时间：2024-11-07

- Dynamic Mechanism of Soil Detachment by Shallow Flow on Slope
- Vol. 25, Issue 4, (2011)
- 作者机构：
  
  1. 北京师范大学地理学与遥感科学学院
  2. 地表过程与资源生态国家重点实验室
  3. 江西省水土保持科学研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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TANG Ke-ming, ZHANG Guang-hui, REN Zong-ping. Dynamic Mechanism of Soil Detachment by Shallow Flow on Slope[J]. 2011, 25(4).
DOI：

TANG Ke-ming, ZHANG Guang-hui, REN Zong-ping. Dynamic Mechanism of Soil Detachment by Shallow Flow on Slope[J]. 2011, 25(4). DOI：

摘要

为探讨土壤分离过程的水动力机理及植被根系对土壤分离的抑制作用

采用变坡实验水槽

系统研究坡度、流量及根系对土壤分离速率的定量影响。结果表明

土壤分离速率是坡度、流量及根系密度的函数;植被根系能显著降低土壤分离速率

草地土壤分离速率均值仅为休闲对照地的30.6%;随根系密度增加

土壤分离速率呈指数关系下降;0～4 kg/m3为根系减少土壤分离的有效密度区间

在此范围内

根系密度的增加能引起土壤分离速率的急剧降低

超过4 kg/m3

随根系密度增加

土壤分离速率的降幅并不明显。

Abstract

This study was conducted to investigate the hydro-dynamic mechanism of soil detachment and the erosion-reducing effects of grass root.Soil detachment rate was measured using a laboratory flume to study the relationships between it and slope gradient

flow discharge

and grass root.The experimental results indicated that soil detachment rate could be predicted accurately using slope gradient

flow discharge

and root density.The mean value of root-permeated soil detachment rate(switch grass) accounted for 30.6% ...

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Related Institution

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State Key Laboratory of Water Engineering Ecology and Environment in Arid Area， Xi'an University of Technology

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering， Hohai University

State Key Laboratory of Soil and Water Conservation and Desertification Control，College of Soil and Water Conservation Science and Engineering （Institute of Soil and Water Conservation）， Yangling

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