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| 黄土坡面细沟流速随细沟发育的特征 | |
| 引用本文： | 刘俊体,蔡强国,孙莉英,陈俊杰.黄土坡面细沟流速随细沟发育的特征[J].水土保持学报,2012,26(3):44-48. |
| 作者姓名： | 刘俊体 蔡强国 孙莉英 陈俊杰 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,陆地水循环与地表过程重点实验室,北京100101 北京林业大学水土保持学院,北京100083 2. 中国科学院地理科学与资源研究所,陆地水循环与地表过程重点实验室,北京100101 3. 华中农业大学资源与环境学院,武汉,430070 |
| 基金项目： | 国家自然科学基金面上项目(40971165) |
| 摘 要： | 研究细沟流速特征是对细沟侵蚀发育机理探讨的必要方面,通过不同雨强(1.5,2.0,1.0mm/min)连续室内纯净水人工模拟降雨试验,分析不同坡度(10°,15°,20°,25°)、不同坡长(5,10m)条件下细沟流速随细沟发育的变化特征。结果表明,坡面发生细沟侵蚀且再降雨小于前降雨强度的条件下,细沟流速随时间变化的差异极小,可以利用坡面平均细沟流速进行此阶段的相关研究分析;相同降雨条件下,坡长对细沟流速的影响不显著,细沟流速与细沟流路之间的关系应作为进一步研究对象;细沟流速与坡度呈负相关关系,随着降雨进行,细沟的发育,相关程度逐渐增大。 |
| 关 键 词： | 细沟流速 降雨时间 坡长 坡度 |
Characteristics of the Rill Flow Rate with Development of Rill on Loess Slope |
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| Liu Jun-ti,Cai Qiang-guo,Sun Li-ying,Chen Jun-jie.Characteristics of the Rill Flow Rate with Development of Rill on Loess Slope[J].Journal of Soil and Water Conservation,2012,26(3):44-48. | |
| Authors: | Liu Jun-ti Cai Qiang-guo Sun Li-ying Chen Jun-jie |
| Institution: | 1.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101;2.College of Soil and Water Conservation,Beijing Forestry University, Beijing 100083;3.College of Resources and Environment,Huazhong Agriculture University,Wuhan 430070) |
| Abstract: | The study of rill flow rate characteristics is necessary aspect for the rill erosion development mechanism.Using continuous indoor simulate rainfall experiment with deionized water under different conditions which rainfall intensity was 1.5,2.0,1.0 mm/min,and slope gradient was 10°,15°,20°,25°,slope length was 5,10 m,study on characteristics of the rill flow rate with rill development.The results show: When rainfall intensity is less than the before rainfall intensity,there is a little change in the rill flow with time going,it is possible to make research and analysis by the average rill flow rate;under the same rainfall intensity,the impact of slope length is not significant.The relationship between rill flow rate and rill path should be investigated fatherly;the rill flow rate was negatively related to the slope,and the degree of correlation increases as rill developing. |
| Keywords: | rill flow rate rainfall time slope length slope gradient |
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