| 模拟降雨条件下植被调控坡面水沙输出过程研究 |
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| 引用本文： | 侯沛轩,孙佳美,余新晓,李瀚之.模拟降雨条件下植被调控坡面水沙输出过程研究[J].土壤,2016,48(4):819-823. |
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| 作者姓名： | 侯沛轩 孙佳美 余新晓 李瀚之 |
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| 作者单位： | 北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 为研究不同植被覆盖对坡面水沙输出过程调控效应,本文通过人工模拟降雨试验的方法,对3种典型的乔木灌木草本植被即构树、荆条和黑麦草,在坡度10°、降雨强度30 mm/h和坡度20°、降雨强度30 mm/h条件下的水沙输出的过程进行了试验研究,并对结果进行了综合分析。研究结果表明:3种植被整个产流过程的径流量均呈现先上升后逐渐稳定的趋势,产沙量呈先上升后下降,再逐渐保持稳定的趋势;构树、荆条和黑麦草均对坡面产流产沙过程有良好的调控能力,能够减少径流量和产沙量,其中黑麦草对产流和产沙均表现出较强的调控力,其次是构树,荆条最差。在对坡面径流流速的调控方面,流速整体呈现先增加后稳定的趋势,三者对径流流速的调控能力:黑麦草荆条构树。
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| 关 键 词： | 模拟降雨 植被 坡面 径流 泥沙 |
| 收稿时间： | 2015/4/17 0:00:00 |
| 修稿时间： | 2015/5/13 0:00:00 |
Study on Runoff and Erosion Process of Vegetation Slope Under Simulated Rainfall Conditions |
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| HOU Peixuan,SUN Jiamei,YU Xinxiao and LI Hanzhi.Study on Runoff and Erosion Process of Vegetation Slope Under Simulated Rainfall Conditions[J].Soils,2016,48(4):819-823. |
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| Authors: | HOU Peixuan SUN Jiamei YU Xinxiao and LI Hanzhi |
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| Institution: | Key Lab.of Soil and Water Conservation and Deserti fication Combating of Ministry of Education,Beijing Forest University,Key Lab.of Soil and Water Conservation and Deserti fication Combating of Ministry of Education,Beijing Forest University,Key Lab.of Soil and Water Conservation and Deserti fication Combating of Ministry of Education,Beijing Forest University,Key Lab.of Soil and Water Conservation and Deserti fication Combating of Ministry of Education,Beijing Forest University |
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| Abstract: | Cover on the runoff and sediment process output regulation effect of different vegetation, in this paper, through the method of artificial rainfall simulation experiment, on three kinds of trees and shrubs and herbaceous vegetation that Broussonetia papyrifera, Vitex negundo and Ryegrass, the process of water and sediment output in the slope of slope10° rainfall intensity 30mm/h and slope 20° rainfall intensity 30mm/h under the conditions studied, and comprehensive analysis the results. The results of the study show that: The runoff three vegetation runoff process were increased gradually after the stable trend, the sediment yield was first increased and then decreased, then gradually stable trend, are Broussonetia papyrifera, Vitex negundo and ryegrass control good ability of runoff and sediment process, to reduce the runoff and sediment yield, the ryegrass on runoff and sediment yield showed stronger regulation, the second is the Broussonetia papyrifera, the worst is the Vitex negundo. In the regulation of runoff flow velocity, the overall flow rate increased first and then stable trend, three ability to regulate the runoff rate: Ryegrass> Vitex negundo> Broussonetia papyrifera. |
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| Keywords: | Simulated rainfall vegetation slope runoff sediment |
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