| 不同降雨强度下农地的产流产沙研究 |
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| 引用本文： | 孙飞达,蒋志荣,王立.不同降雨强度下农地的产流产沙研究[J].甘肃科学学报,2005,17(1):53-56. |
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| 作者姓名： | 孙飞达 蒋志荣 王立 |
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| 作者单位： | 甘肃农业大学,林学院,甘肃,兰州,730070 |
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| 摘 要： | 采用人工模拟降雨的方法，分设5种不同的降雨强度研究半干旱区农地的产流产沙特征，结果表明：农地径流量、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，小麦地和裸地径流量平均值分别为39．1mm和50．1mm，径流系数最高达60％以上，裸地与小麦地的侵蚀模数之比最大达25倍。
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| 关 键 词： | 人工模拟降雨 降雨强度农地 产流产沙 |
| 文章编号： | 1004-0366(2005)01-0053-04 |
| 修稿时间： | 2004年7月30日 |
Study on Sediment and Yield Runoff of Farmlands under Different Intensitics of Rainfall |
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| SUN Fei-da,JIANG Zhi-rong,WANG Li.Study on Sediment and Yield Runoff of Farmlands under Different Intensitics of Rainfall[J].Journal of Gansu Sciences,2005,17(1):53-56. |
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| Authors: | SUN Fei-da JIANG Zhi-rong WANG Li |
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| Abstract: | The characteristics of 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 intensitics were divided. The results showed that the farmland runoff and soil erosion were increased with the exponential or the power function of the rainfall intensity. The average runoffs of wheat land and bareland were 39.1 mm and 50.1 mm respectionely, and the maximum runoff coefficient was above 60%, the biggest soil erosion of the bareland was 25 times as much as that of the wheat land. |
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| Keywords: | artificial simulation of rainfall rainfall intensity farm land sediment and yield runoff |
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