| 陕北丘陵沟壑区降雨侵蚀力指标研究 |
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| 引用本文： | 杨开宝,郭培才.陕北丘陵沟壑区降雨侵蚀力指标研究[J].水土保持通报,1994,14(5):31-35. |
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| 作者姓名： | 杨开宝 郭培才 |
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| 作者单位： | 陕西省黄土高原治理研究所 米脂县 718100;陕西省黄土高原治理研究所 米脂县 718100 |
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| 摘 要： | 降雨侵蚀力（Ｒ）是引起土壤侵蚀的潜在能力，是降雨物理特征的函数。Ｒ值的计算方法众多，且过程繁锁，该就陕西省黄土高原治理研究所农耕地标准径流小区（１９８３－１９９１年）观测资料，运用计算机技术，采用灰色系统理论中关联分析的方法，对Ｒ指标的不同复俣参数与土壤侵一的关系进行了系统分析，并在回归分析的基础上，对一次降雨（特别是短历时暴雨）的总动能简化计算方法进行了有益的探讨，推导出一个简化计算式。
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| 关 键 词： | 土壤侵蚀 降雨侵蚀力 陕北丘陵 |
| 收稿时间： | 1994/6/18 0:00:00 |
Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area |
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| Yang Kaibao and Guo Peicai.Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area[J].Bulletin of Soil and Water Conservation,1994,14(5):31-35. |
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| Authors: | Yang Kaibao and Guo Peicai |
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| Institution: | Insiuule of loesss plateau Contraol of shaanxi province, Mizhi, Shaanxi, 7181000;Insiuule of loesss plateau Contraol of shaanxi province, Mizhi, Shaanxi, 7181000 |
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| Abstract: | Erosivity of rainfall(R)is the potential ability which cause soil erosion and is the function of the physics characteristic of rainfall.There are many methods to calculate the value R, But the calculating process is overlaborate.Based on the observation data from the normal runoff plots(MP I,blank controlled)on the cultivated landof our institute during 1983-1991,the relationships between the different compound parameter of index R andamount of soil erosion has been systematically analysed by the method of correlation analysis in grey system theorysnd computer technique.And based on the regression analysis,the simplified calculation method of the total kineticenergy of once rainfall(especially the torrential rain during a short period of time)has been approached beneficially,and a simplified caculation has been deduced. |
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| Keywords: | rainfall erosivity correlattion analysis erosion kinetics |
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