MA Liang,ZUO Chang-qing,SUN Meng,et al.Spatial Characteristics and Simplified Empirical Models of Annual Rainfall Erosivity in Shandong Province[J].Research of Soil and Water Conservation,2010,17(02):28-31.
山东省降雨侵蚀力空间分布特征及简易方程的研究
- Title:
- Spatial Characteristics and Simplified Empirical Models of Annual Rainfall Erosivity in Shandong Province
- Keywords:
- rainfall erosivity; spatial interpolation; annual rainfall; empirical model; Shandong province
- 分类号:
- P331.1;S157.1
- 摘要:
- 研究基于山东省境内22个气象站1951-2008年间日降雨资料，计算了该省多年降雨侵蚀力因子R值，运用径向基函数空间插值法，分析了该省降雨侵蚀力的空间分布特征，同时借助年降雨量与年降雨侵蚀力之间的数量关系，建立并验证了山东省年降雨侵蚀力的简易经验方程。
- Abstract:
- On the basis of daily precipitation database collected in 22 meteorological stations in Shandong province from 1951 to 2008, the annual rainfall erosivity factor (R) is analyzed in this paper. The spatial interpolation of radial basis functions is applied to develop the spatial characteristics of R in Shandong province. The highest average annual rainfall erosivity occurred in the southeastern part of the province, and decreased from the east to the west, from the south to the north. Erosivity in the national and provincial key control of water erosion zones is higher than others. In the study, the simplified empirical models derived by the relationship of annual rainfall amount and erosivity, for estimating the annual rainfall erosivity factor R are calibrated and validated by using the coefficient of determination and the Nash-Suttclife efficiency (Ens).
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备注/Memo
收稿日期:2009-9-21。
基金项目:水利部公益性行业科研专项经费项目（200901047）；国家“973”重点基础研究发展计划（2006CB400505）
作者简介:马良（1980- ），男，山东东阿人，博士研究生，主要从事水土流失防治规律、生态水文方向的研究。E-mail：maliang@ires.cn
通讯作者:左长清（1956- ），男，湖南衡阳人，博士，教授级高工，长期从事水土流失防治规律研究。E-mail：zuochq@sina.com