| Van Genuchten模型在土壤水分特征曲线拟合分析中的应用 |
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| 引用本文： | 王小华,贾克力,刘景辉,李立军. Van Genuchten模型在土壤水分特征曲线拟合分析中的应用[J]. 干旱地区农业研究, 2009, 27(2): 179-183 |
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| 作者姓名： | 王小华 贾克力 刘景辉 李立军 |
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| 作者单位： | 1. 内蒙古农业大学水利与土木建筑工程学院,内蒙古,呼和浩特,010018
2. 内蒙古农业大学农学院,内蒙古,呼和浩特,010018 |
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| 摘 要： | 利用Matlab软件的非线性拟合和非线性回归函数,对传统耕作和免耕耕作两种方式下土壤水分特征曲线进行分析,建立相应的Van Genuchten模型,并对模型进行检验和应用.结果表明,非线性回归较非线性拟合适应性高;Van Genuchten模型适应性好,可以应用于不同耕作条件下的土壤水分分析.
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| 关 键 词： | 土壤水分特征曲线 Van Genuchten模型 耕作 非线性拟合 非线性回归函数 |
Application of Van Genuchten model to analysis of soil moisture characteristic curve |
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| WANG Xiaohu,JIA Keli,LIU Jinghui,LI Lijun. Application of Van Genuchten model to analysis of soil moisture characteristic curve[J]. Agricultural Research in the Arid Areas, 2009, 27(2): 179-183 |
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| Authors: | WANG Xiaohu JIA Keli LIU Jinghui LI Lijun |
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| Affiliation: | 1.College of Water Conservency and Civil Engineering;Huhhot;Inner Monggolia 010018;China;2.College of Agronomy;Inner Mongolia Agricultural University;China |
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| Abstract: | Two useful functions of Matlab software are used,namely,nonlinear curve fitting and nonlinear regression function.The soil moisture characteristic curves under zero tillage and conventional tillage are analyzed.Van Genuchten model is used to model the soil characteristic curves under the conditions of zero tillage and conventional tillage.The results show that the nonlinear regression function has better adaptability.Van Genuchten model can be used in soil moisture analysis under different tillage condition... |
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| Keywords: | soil moisture characteristic curve tillage Van Genuchten model nonlinear curve fitting nonlinear regression function |
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