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| 黄土丘陵区不同降雨强度对农地土壤侵蚀的影响 | |
| 引用本文： | 孙飞达,王立,龙瑞军,路承香,包正育.黄土丘陵区不同降雨强度对农地土壤侵蚀的影响[J].水土保持研究,2007,14(2):16-18. |
| 作者姓名： | 孙飞达 王立 龙瑞军 路承香 包正育 |
| 作者单位： | 1. 甘肃农业大学草业学院,兰州,730070;甘肃农业大学林学院,兰州,730070 2. 甘肃农业大学林学院,兰州,730070 3. 甘肃农业大学草业学院,兰州,730070;中国科学院西北高原生物研究所,西宁,810008 |
| 基金项目： | 国家自然基金资助项目（39960052）;教育部骨干教师计划项目;中国科学院百人计划资助项目 |
| 摘 要： | 采用人工模拟降雨的方法，对仪器自身性能进行了测试，并分设5种不同的降雨强度分别研究半干旱区林地、草地、人工草地和耕地的产流产沙特征。模拟天然降雨最大雨强5．05mm／min，雨量118．2～300．3mm／h；雨滴落地速度、雨滴动能等降雨特征值与天然降雨特征值是一致的；不同立地条件下径流量、侵蚀模数随雨强的增加而增加，并与降雨强度呈指数函数或幂函数关系。 |
| 关 键 词： | 人工模拟降雨 降雨强度 土壤侵蚀 产流产沙 |
| 文章编号： | 1005-3409（2007）02-0016-03 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006年4月20日 |
Effects of Farmlands' Soil Erosion Under Different Intensities of Rainfall in Loess Hilly Regions |
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| SUN Fei-da,WANG Li,LONG Rui-jun,LU Cheng-xiang,BAO Zheng-yu.Effects of Farmlands'''' Soil Erosion Under Different Intensities of Rainfall in Loess Hilly Regions[J].Research of Soil and Water Conservation,2007,14(2):16-18. | |
| Authors: | SUN Fei-da WANG Li LONG Rui-jun LU Cheng-xiang BAO Zheng-yu |
| Institution: | 1. Faculty of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China 2. Forestry College of Gansu Agricultural University ,Lanzhou 730070, China 3. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China |
| Abstract: | The characteristics of rainfall simulator devices and sediment and yield runoff on farmlands were studied by adopting artificial simulation of rainfall in the semi-arid area of Dingxi,Gansu province. 5 different rainfall intensities were divided. The results showed that the maximum rainfall intensity and the precipitation were 5.05 mm/min and 118.2-300.3 mro/h respectively. The water drop falling velocity, power and others rainfall characteristics were unanimous with natural rainfall. The farmlands runoff and soil erosion were increased with the exponential or the power function of the rainfall intensity. |
| Keywords: | artificial simulation of rainfall rainfall intensity soil erosion sediment and yield runoff |
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