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Position: Home > Articles > Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity Bulletin of Soil and Water Conservation 2001,21 (6) 53-56

用日雨量和雨强计算降雨侵蚀力

作  者:
谢云;章文波;刘宝元
单  位:
北京师范大学资源与环境系;北京师范大学环境演变与自然灾害教育部重点实验室
关键词:
降雨侵蚀力;次降雨资料;日降雨资料
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 .95 0 ,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。
译  名:
Rainfall Erosivity Estimation Using Daily Rainfall Amount and Intensity
作  者:
XIE Yun 1, ZHANG Wen-bo 2, LIU Bao-yuan 2 (1.Department of Resource and Environmental Sciences, Beijing Normal University, Beijing 100875, PRC; 2.Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing N
关键词:
rainfall erosivity; rainfall event data; daily rainfall data
摘  要:
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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