潮棕壤土水分特征曲线预测方法研究Prediction Method of the Characteristic Curve of Water in Brown Soil
刘伟群;陈晓飞;张和喜;李玲;
摘要(Abstract)：
借助于最小二乘法,形成了确定Brooks-Corey(1964)模型,van Genuchen(1980)模型中的参数所对应的非线性方程组,并用Picard迭代求解它们。用VB语言编写了程序,用压力膜法测定了潮棕壤土同一地点不同层的水分特征曲线。最后,用以上两种模型对土壤水分特性曲线进行了预测,结果表明:VG模型与BC模型的预测值均与实测值具有良好的一致性,VG模型较BC模型对潮棕壤土土壤水分特征曲线的预测效果更好些。
关键词(KeyWords)： 土壤水分特征曲线;模型;最小二乘法;压力膜法
基金项目(Foundation): 国家自然科学基金项目
作者(Author): 刘伟群;陈晓飞;张和喜;李玲;
Email:
DOI: 10.13989/j.cnki.0517-6611.2006.09.085
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