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[1]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.

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Spatial Characteristics and Simplified Empirical Models of Annual Rainfall Erosivity in Shandong Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 02 Page number: 28-31 Column: Public date: 2010-04-20

Title:: Spatial Characteristics and Simplified Empirical Models of Annual Rainfall Erosivity in Shandong Province

Author(s):: MA Liang^1,3, ZUO Chang-qing², SUN Meng⁴, LI Hong-mei⁵; 1. State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;
2. Research Center on Soil and Water Conservation of the Ministry of Water Resources, Beijing 100044, China

Keywords:: rainfall erosivity; spatial interpolation; annual rainfall; empirical model; Shandong province

CLC:: P331.1;S157.1

DOI:: -

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 (E_ns).

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