[1]张志玲,范昊明,郭成久,等.模拟降雨条件下坡面水流流速与径流输出特征研究[J].水土保持研究,2008,15(06):32-34.
　ZHANG Zhi-ling,FAN Hao-ming,GUO Cheng-jiu,et al.Study on the Relationship Between Flow Velocity of Sloping Face and Runoff Characteristic Under the Simulated Rainfall[J].Research of Soil and Water Conservation,2008,15(06):32-34.
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模拟降雨条件下坡面水流流速与径流输出特征研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 15 期数: 2008年06期 页码: 32-34 栏目: 出版日期: 2008-12-20
Title:
Study on the Relationship Between Flow Velocity of Sloping Face and Runoff Characteristic Under the Simulated Rainfall
作者:
张志玲1, 范昊明2, 郭成久2, 武敏2, 李洪丽2, 韩英3
1. 辽宁工程技术大学, 资源与环境学院, 辽宁 阜新 123000;
2. 沈阳农业大学, 水利学院, 沈阳 110161;
3. 中国科学院, 沈阳应用生态研究所, 沈阳 110016
Author(s):
ZHANG Zhi-ling1, FAN Hao-ming2, GUO Cheng-jiu2, WU Min2, LI Hong-li2, HAN Ying3
1. Liaoning Technical University, Fuxin, Liaoning 123000, China;
2. College of Water Resources, Shenyang Agriculture University, Shenyang 110161, China;
3. Institute of Applied Ecology, Chinese Academy of Science, Shenyang 110016, China
关键词:
模拟降雨; 坡度; 流速; 径流量; 临界坡度
Keywords:
simulated rainfall; slope gradient; flow velocity; the amount of rainfall; critical slope
分类号:
S157.1
摘要:
利用室内人工模拟降雨试验，研究不同坡度径流小区的水流流速与径流输出特征间的关系。研究结果表明：定坡长土槽坡度变化为5～20°时，水流流速随着坡面坡度的增加呈递增趋势；同时，同一坡度下坡面水流流速随时间的变化大体上是增加的过程；在模拟降雨条件下，30min内坡面水流速度的变化趋势分为3个阶段：降雨径流产生初期，坡面微形态的形成阶段和侵蚀沟形成阶段。在25°坡面上，这3个阶段的界限不明显。另外，得出了径流量输出特征与水流速度有着密切的幂函数相关关系，且5°，10°，15°，20°坡面流速与径流量的相关系数在0.9左右，但25°坡面的相关系数较小。根据方差得出，5～25°坡面流速与径流量关系显著，坡度越大，流速对径流量的影响越显著，并分析出20～25°是坡地土壤侵蚀的临界坡度。
Abstract:
The relationship between flow velocity of sloping face and runoff characteristic was studied under the simulated rainfall in this paper.The results indicated that: when the slope of the fixed long plot ranged from 5°to 20°,the flow velocity was increased along with the slope.Meanwhile,the flow velocity was increased with time at the same slope.The trend of flow velocity can be divided into three phases: the initial stage of runoff from precipitation; the stage of minute form on the slope face; the stage of rills came basically into shape.While the slope gradient was 25°,the demarcation of three stages was unclear.The close relationship between flow velocity of sloping face and runoff characteristic can be illustrated by power function y＝axb (0

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备注/Memo

收稿日期:2008-4-20;
基金项目:国家自然科学基金资助项目（40601054）；辽宁省教育厅高等学校科学研究青年基金资助项目（05L403）
作者简介:张志玲（1983- ），女，辽宁葫芦岛人，硕士研究生，主要从事土壤侵蚀规律及其治理方面的研究。E-mail：ling1983304@163.com
通讯作者:范昊明（1972- ），男，吉林白山人，博士，主要从事流域侵蚀、产沙与水土保持规划方面的研究。E-mail：fanhaoming@163.com

更新日期/Last Update: 1900-01-01