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首页> 外文期刊>Computer and information science >Developing Pedotransfer Functions for Estimating Field Capacity and Permanent Wilting Point Using Fuzzy Table Look-up Scheme
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Developing Pedotransfer Functions for Estimating Field Capacity and Permanent Wilting Point Using Fuzzy Table Look-up Scheme

机译：使用模糊表查找方案开发Pedotransfer函数以估算田间持水量和永久枯水点

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摘要

Study of soil properties like field capacity (F.C) and permanent wilting point (P.W.P) plays important roles in study of soil moisture retention curve. Pedotransfer functions (PTFs) provide an alternative by estimating soil parameters from more readily available soil data. In this study, a new approach is proposed as a modification to a standard fuzzy modeling method based on the table look-up scheme. 70 soil samples were collected from different horizons of 15 soil profiles located in the Ziaran region, Qazvin province, Iran. Then, fuzzy table look-up scheme was employed to develop pedotransfer functions for predicting F.C and P.W.P using easily measurable characteristics of clay, silt, O.C, S.P, B.D and CaCO_3. In order to evaluate the models, root mean square error (RMSE) and R~2 were used. The value of RMSE and R~2 derived by fuzzy table look-up scheme for F.C and P.W.P were (1.65,0.87) and (1.03,0.83), respectively.
机译：田间持水量（F.C）和永久枯萎点（P.W.P）等土壤特性的研究在研究土壤水分保持曲线方面起着重要作用。 Pedotransfer函数（PTF）通过从更容易获得的土壤数据中估算土壤参数来提供替代方法。在这项研究中，提出了一种新方法，作为对基于表查找方案的标准模糊建模方法的改进。从位于伊朗加兹温省齐亚兰地区的15个土壤剖面的不同层位采集了70个土壤样品。然后，采用模糊表查找方案，利用易于测量的黏土，淤泥，O.C，S.P，B.D和CaCO_3的特性，开发出预测F.C和P.W.P的脚传函数。为了评估模型，使用了均方根误差（RMSE）和R〜2。通过模糊表查找方案得出的F.C和P.W.P的RMSE和R〜2值分别为（1.65,0.87）和（1.03,0.83）。

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