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[1]LI Na,WEI Yong-xia,YAN Chang-rong,et al.Study on the Soil Erosion Simulation Model of the High-dimension Non-linear Index Model GWS and Its Parameters Identification Method[J].Research of Soil and Water Conservation,2009,16(02):38-41.

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Study on the Soil Erosion Simulation Model of the High-dimension Non-linear Index Model GWS and Its Parameters Identification Method

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 02 Page number: 38-41 Column: Public date: 2009-04-20

Title:: Study on the Soil Erosion Simulation Model of the High-dimension Non-linear Index Model GWS and Its Parameters Identification Method

Author(s):: LI Na¹, WEI Yong-xia¹, YAN Chang-rong², ZHANG Zhong-xue¹; 1. Water and Civil Engineering College, Northeast Agricultural University, Harbin, 150030, China;
2. Institute of Environment and Sustainable Development on Agriculture, Chinese Academy of Agricultural Science, Beijing, 100081, China

Keywords:: soil erosion; model; parameter identification; artificial rainfall; simulation precision

CLC:: S157.1

DOI:: -

Abstract:: Aiming at the problems of applicability and simulation precision of the routine experienced statistical soil erosion models,based on the reasonable extension of the high-order grey dispersed array dynamic model,a multivariable high-dimension non-linear index model was established.Through the optimization by MATLAB,the searching and identification of the parameters in the non-linear model was come true.There are many characters of rich volume of information,huge potential for development and utilization and wide application scope on this model.In the case of artificial rainfall,the simulation results of soil erosion in sloping farmland indicated that the valid coefficient of the model >0.91,the average error rate <6.2%,the stimulation precision is fairly high.

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