Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area

Yang Kaibao; Guo Peicai

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Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area

- Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area
- Bulletin of Soiland Water Conservation Vol. 13, Issue 5, Pages: 31-35(1994)
- 作者机构：
  
  陕西省黄土高原治理研究所米脂县,718100
- 作者简介：
- 基金信息：
- DOI：
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- Published：1994
- 稿件说明：
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Yang Kaibao, Guo Peicai. Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area[J]. Bulletin of Soiland Water Conservation, 1994, 13(5): 31-35.
DOI：

Yang Kaibao, Guo Peicai. Study on Erosivity Index of Rainfall in Northern Shaaxi Hilly and Gully Area[J]. Bulletin of Soiland Water Conservation, 1994, 13(5): 31-35. DOI：

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，且过程繁琐。该文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指标的不同复合参数与土壤侵蚀量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。

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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