| 坡耕地土壤流失规律研究 |
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| 引用本文： | 刘莉丽,张建军,聂小妮,佘雕.坡耕地土壤流失规律研究[J].西北林学院学报,2005,20(4):101-103. |
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| 作者姓名： | 刘莉丽 张建军 聂小妮 佘雕 |
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| 作者单位： | 1. 西北农林科技大学,资源环境学院,陕西,杨陵,712100
2. 汉中职业技术学院,东校区,陕西,汉中,723001 |
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| 基金项目： | 国家攻关计划项目（96-004-05-06）;西北农林科技大学科研专项（6601-08080207） |
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| 摘 要： | 通过人工模拟降雨,研究了降雨强度、坡度和耕作措施与土壤流失的关系,得出坡度和耕作措施相同时,雨强与土壤侵蚀模数之间呈较好的指数函数关系;耕作措施相同、雨强接近时,土壤侵蚀模数与坡度之间呈较好的幂函数关系。当坡度相同,雨强小于0.75 mm.m i-n 1时,土壤侵蚀模数沿直线坡-锄地-等高犁地-等高沟垄序列逐渐下降;当雨强大于1.5 mm.m i-n 1时,土壤侵蚀模数沿该序列逐渐增大。
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| 关 键 词： | 坡耕地 土壤流失规律 人工模拟降雨 |
| 文章编号： | 1001-7461（2005）04-0101-03 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005年3月28日 |
Regulation of Soil Loss on Slope Land |
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| LIU Li-li,ZHANG Jian-jun,NIE Xiao-ni,SHE Diao.Regulation of Soil Loss on Slope Land[J].Journal of Northwest Forestry University,2005,20(4):101-103. |
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| Authors: | LIU Li-li ZHANG Jian-jun NIE Xiao-ni SHE Diao |
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| Institution: | LIU Li-li~1,ZHANG Jian-jun~2,NIE Xiao-ni~1,SHE Diao~1 |
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| Abstract: | Through artificial simulation of rainfall,the relationships between soil erosion and rainfall intensity,slope gradient and ploughing modes are studied.The results show that the soil erosion modulus is exponentially correlated with the rainfall density within the same slope gradients and ploughing modes.It is also exponentially oorrelated with the slope gradients within the same ploughing modes and rainfall densities.When the slop gradient is the same and the rainfall inten-sity is lower than 0.75 mm/min,the erosion modulus decreased gradually in the order of straight line slope,hoeing,ploughing along the contour line,and furrowing along the contour line.When the rainfall intensity is higher than 1.5 mm/min,the soil erosion modulus increased gradually from the same sequence. |
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| Keywords: | sloping land soil erosion regulation artificial simulation of rainfall |
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