Effect of Vegetation’s Position on Slope on Sediment Yield Induced by Rainfall

YOU Zhen; LI Zhanbin; JIANG Qingfeng

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Effect of Vegetation’s Position on Slope on Sediment Yield Induced by Rainfall

- Effect of Vegetation’s Position on Slope on Sediment Yield Induced by Rainfall
- Bulletin of Soiland Water Conservation Vol. 25, Issue 6, Pages: 28-31(2006)
- 作者机构：
  
  1. 南通大学地理科学学院,江苏,南通,226007
  2. 中国科学院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. ,北京,100083
  4. 西安理工大学,陕西,西安,710000
  5. 中国科学院南京地理与湖泊研究所,江苏,南京,210008
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
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YOU Zhen, LI Zhanbin, JIANG Qingfeng. Effect of Vegetation’s Position on Slope on Sediment Yield Induced by Rainfall[J]. Bulletin of Soiland Water Conservation, 2006, 25(6): 28-31.
DOI：

YOU Zhen, LI Zhanbin, JIANG Qingfeng. Effect of Vegetation’s Position on Slope on Sediment Yield Induced by Rainfall[J]. Bulletin of Soiland Water Conservation, 2006, 25(6): 28-31. DOI：

摘要

植被在坡面的不同位置

对坡面保持水土的作用是不同的。通过野外人工模拟降雨试验比较了在相同面积条件下

植被分别分布在坡面上部、中部和下部时

坡面降雨产沙量的差异。结果显示

对保土能力来说

坡下植被>坡中植被>坡上植被

而且这种差异在小雨强下更加明显。这充分说明

坡下部的植被在保护坡面土壤不被流失方面起着举足轻重的作用。因此保护好坡下部的植被可以有效地防止坡面水土流失。

Abstract

Vegetation at different slope positions has different roles in soil and water conservation. This paper com-pares the discrepancies of sediment yield induced by rainfall with vegetation dist ributed in the upper

middle and lower slopes. Result s indicate that vegetation dist ributed in the lower slope conserves soil better than that in the upper and middle slopes. As rainfall intensity decreases

the discrepancies become more distinct .So

vegetation in the lower slope is very important to soil and water conservation on slopping land. The Loess Plateau is the typical area suffering f rom severe soil and water loss

on which rainstorm occurs rarely. The rainfall intensity which in- duces soil erosion is rarely greater than 50 mm/h. Under the condition

vegetation in the lower slope can play an important role. Therefore

we should well protect vegetation in the lower slope to conserve soil. We put forward some suggestions for a better landuse on slopping land.

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