[1]李娜,魏永霞,严昌荣,等.土壤侵蚀模拟的高维指数非线性模型及参数辨识方法研究[J].水土保持研究,2009,16(02):38-41.
　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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土壤侵蚀模拟的高维指数非线性模型及参数辨识方法研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 16 期数: 2009年02期 页码: 38-41 栏目: 出版日期: 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
作者:
李娜1, 魏永霞1, 严昌荣2, 张忠学1
1. 东北农业大学水利与建筑学院, 哈尔滨, 150030;
2. 中国农业科学院农业环境与可持续发展研究所, 北京, 100081
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
关键词:
土壤侵蚀; 模型; 参数辨识; 人工降雨; 模拟精度
Keywords:
soil erosion; model; parameter identification; artificial rainfall; simulation precision
分类号:
S157.1
摘要:
针对常规土壤侵蚀经验统计模型适用性不强、模拟精度不佳等问题,对灰色离散序列高阶动态模型进行合理扩展,建立了多变量高维指数非线性模型,通过MATLAB寻优,实现了非线性模型中参数的搜索—辨识.该模型具有信息包容量丰富、信息开发利用潜力大、适用范围广等特点.人工降雨条件下的坡耕地土壤侵蚀模拟结果表明:模型有效系数>0.91,平均误差率<6.2%,模拟精度较高.
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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备注/Memo

收稿日期:2008-9-8;改回日期:。
基金项目:国家科技支撑计划项目(2006BAD29B01、2007BAD88B01);黑龙江省重点科技攻关项目(GB06B106-3);东北农业大学科技创新团队项目(CXT003-2-3)
作者简介:李娜(1984- ),女,硕士研究生,主要研究方向为水土保持理论与技术.E-mail:linaks2008@126.com
通讯作者:魏永霞(1961- ),女,教授,主要从事水土保持理论与技术、农业节水与水资源可持续利用研究.E-mail:wyx0

更新日期/Last Update: 1900-01-01