| 杨凌天然降雨侵蚀力初步研究 |
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| 引用本文： | 吴光艳,成婧,吴发启,王健. 杨凌天然降雨侵蚀力初步研究[J]. 中国农村水利水电, 2011, 0(4) |
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| 作者姓名： | 吴光艳 成婧 吴发启 王健 |
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| 作者单位： | 西北农林科技大学资源环境学院,陕西杨凌,712100 |
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| 基金项目： | 国家自然科学基金(40871133); 国家重点基础研究发展“973”计划基金(2007CB407201) |
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| 摘 要： | 天然降雨是土壤侵蚀的动力因子之一,是研究降雨侵蚀力规律的基本依据.本研究以天然降雨特性为基础,对降雨侵蚀力进行了初步研究.实验运用虹吸式雨量计记录杨凌的天然降雨过程,同时采用滤纸色斑法观测天然降雨雨滴的特征,结合图形处理软件Image-J处理雨滴直径.研究结果表明:该区天然降雨雨滴大小分布符合Best函数式;降雨强度大小直接决定雨滴中数直径和降雨动能的大小,在与国内外经验关系式对比中,与江忠善所研究的降雨动能最接近,同时由于雨型的不同和观测范围的限制而存在一定差异.
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| 关 键 词： | 土壤侵蚀 天然降雨 降雨强度 雨滴中数直径 降雨动能 侵蚀力 |
A Study of the Erosion Force of Natural Raindfall in Yangling |
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| WU Guang-yan , CHENG Jing , WU Fa-qi , WANG Jian. A Study of the Erosion Force of Natural Raindfall in Yangling[J]. China Rural Water and Hydropower, 2011, 0(4) |
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| Authors: | WU Guang-yan CHENG Jing WU Fa-qi WANG Jian |
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| Affiliation: | WU Guang-yan,CHENG Jing,WU Fa-qi,WANG Jian(College of Resources and Environment,Northwest Agricultural and Forestry University,Yangling 712100,Shaanxi Province,China) |
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| Abstract: | Natural rain is one of the power factors of soil erosion,it is a basic evidence of erosion force.This paper is an attempt to study the erosion force based on the characteristics of natural rainfall.The process of natural rainfall is recorded by siphonic pluviograph,then the natural raindrop is observed with the filter-color stain method,and the raindrop diameter is measured by the computer software called Image-J.The results indicate that the distribution of natural raindrop size coincides with Best's funct... |
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| Keywords: | soil erosion natural rainfall rainfall intensity median raindrop diameter kinetic energy of rain erosion force |
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