Please use this identifier to cite or link to this item:
http://hdl.handle.net/11607/2673
Title: | Developing soil cation exchange capacity pedotransfer functions using regression and neural networks and the effect of soil partitioning on the accuracy and precision of estimation |
Authors: | Salehi, Mohammad Hassan Mohajer, Reza Beigie, Habib Assistant Professors, Soil Science Dept., College of Agriculture, Shahrekord University |
Keywords: | Cation Exchange Capacity (Cec) Pedotransfer Regression Neural Network Soil Partitioning |
Issue Date: | 2008 |
Publisher: | Adnan Menderes Üniversitesi Ziraat Fakültesi Dergisi |
Citation: | Salehi, H. M., Mohajer, R., Beigie, H. (2008). Developing soil cation exchange capacity pedotransfer functions using regression and neural networks and the effect of soil partitioning on the accuracy and precision of estimation. International Meeting on Soil Fertility Land Management and Agroclimatology, Special Issue, 345-356. |
Abstract: | Soil fertility measures such as cation exchange capacity (CEC) may be used in upgrading soil maps and improving their quality. Direct measurement of CEC is costly and laborious. Therefore, indirect estimation of CEC via pedotransfer functions may be appropriate and effective. Several delineations of two consociation map units consisting of two soil families (Shahrak series and Chaharmahal series), located in Shahrekord plain, Iran were identified. Soil samples were taken from two depths of 0-20 and 30-50 cm and were analyzed in lab for several physico-chemical properties. Clay and organic matter percentages as well as moisture content at -1500 kpa best correlated with CEC. Pedotransfer functions were successfully developed using regression and neural networks. Soil partitioning increased the accuracy and precision of functions. Compared to regression, neural network technique resulted in pedotransfer functions with higher R2 and lower RMSE. |
URI: | http://hdl.handle.net/11607/2673 |
Appears in Collections: | 2009 Özel Sayı |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.