Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity

XIE Yun; ZHANG Wen-bo; LIU Bao-yuan

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Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity

- Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity
- Bulletin of Soiland Water Conservation Vol. 20, Issue 6, Pages: 53-56(2001)
- 作者机构：
  
  1. 北京师范大学资源与环境系,北京,100875
  2. 北京师范大学环境演变与自然灾害教育部重点实验室,北京,100875
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2001
- 稿件说明：
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XIE Yun, ZHANG Wen-bo, LIU Bao-yuan. Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity[J]. Bulletin of Soiland Water Conservation, 2001, 20(6): 53-56.
DOI：

XIE Yun, ZHANG Wen-bo, LIU Bao-yuan. Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity[J]. Bulletin of Soiland Water Conservation, 2001, 20(6): 53-56. DOI：

摘要

利用全国8个气象站次降雨和日降雨资料

分析了次、日降雨关系。结果表明

用次降雨资料计算的降雨侵蚀力与用日降雨资料计算的降雨侵蚀力

二者之间不仅高度线性相关

而且是通过原点、斜率接近1的直线

方程的平均决定系数达到0.950

表明可以用日降雨资料计算降雨侵蚀力。由于各地区方程的系数差异不显著

可以在不同气候区采用同一个公式。该方法不仅简化了降雨侵蚀力计算

有助于其推广应用

而且大大促进了气象水文资料在土壤侵蚀定量研究中的应用。

Abstract

Daily and event data from 8 weather stations was used to analyze the relationship between daily and event rainfall. The result showed that the difference was not marked

and it was feasible and reasonable to estimate erosivity using daily rainfall data instead of event data. The regression function of rainfall erosivity estimated from daily rainfall and the one from event data was 1∶1 line

and the average R-square of 8 stations was 0.950. Because the coefficient of the line was not different greatly in different climatic regions

an estimated rainfall erosivity model using daily rainfall amount and its maximum 10-min intensity was set up

and its R-square was 0.966 . This analysis will simplify the calculation of rainfall erosivity and stimulate the meteorological data application for soil erosion model.

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