[1]吴冰,邵明安,毛天旭,等.模拟降雨下坡度对含砾石土壤径流和产沙过程的影响[J].水土保持研究,2010,17(05):54-58.
　WU Bing,SHAO Ming-an,MAO Tian-xu,et al.Effects of Slope Gradient on Runoff and Sediment Process in Stony Soil by Stimulated Rainfall[J].Research of Soil and Water Conservation,2010,17(05):54-58.
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模拟降雨下坡度对含砾石土壤径流和产沙过程的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 17 期数: 2010年05期 页码: 54-58 栏目: 出版日期: 2010-10-20
Title:
Effects of Slope Gradient on Runoff and Sediment Process in Stony Soil by Stimulated Rainfall
作者:
吴冰1, 邵明安1,2, 毛天旭1, 朱元骏2
1. 西北农林科技大学 资源环境学院, 陕西 杨陵 712100;
2. 西北农林科技大学 水土保持研究所, 陕西 杨陵 712100
Author(s):
WU Bing1, SHAO Ming-an1,2, MAO Tian-xu1, ZHU Yuan-jun2
1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
关键词:
降雨; 径流量; 产沙量; 砾石含量; 坡度
Keywords:
rainfall; runoff; sediment yield; gravel contents; slope gradient
分类号:
S152.7;S157
摘要:
对含砾石土壤径流和产沙过程的研究不仅有助于深入理解该类型土壤中的水土过程，也可以为基于过程的土壤侵蚀模型模拟提供重要的土壤参数。通过室内模拟降雨试验，分析了3个坡度下含砾石土壤中的径流和产沙过程，研究结果表明，不同砾石含量的土壤在不同坡度下的产流在0～20 min内有明显增加的趋势，之后径流趋于平稳。随着砾石含量的增加，坡度对径流的影响减弱。坡面产沙高峰期出现在0～20 min内，且高峰期产沙量占总产沙量比例相对较大；当坡度为15°时，砾石含量（质量含量百分比）为20%，30%，40%的土壤在30 min后产沙量又增加，与其他坡度相比，土壤总产沙量也明显增加。实验中坡度是决定土壤产沙量的主要因素。
Abstract:
Investigation on the process of runoff and sediment in stony soil can help to understand soil and water process in this kind soil and also provide significant soil parameters for soil erosion process-modeling. In this study, the processes of runoff and sediment in soil containing gravels under three slope gradients were analyzed by simulated rainfall experiments. The results indicated that the runoff in stony soil increased obviously during 0～20 min and then became steady. The effect of gradient on runoff was weakened with the increasing of gravels in the soils. The peak period of sediment generation appeared between 0～20 min. The sediment yields generated during this stage accounted for a considerable proportion to the total. When the gradient reached 15°, the sediment yields of soils with the gravel contents of 20%, 30% and 40% increased again after 30 min. And total soil sediment yields under this gradient increased greatly compared with others. In the experiments, the gradient of the slope dominated the sediment yield.

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备注/Memo

收稿日期:2010-4-26;改回日期:2005-12-1。
基金项目:国家自然科学基金（40801104）
作者简介:吴冰（1987- ），男，陕西富平人，在读硕士研究生，主要研究方向为土壤物理学。E-mail：wubing_32@qq.com
通讯作者:邵明安（1956- ），男，湖北常德人，研究员，主要方向为土壤物理学。E-mail：mashao@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01