Soil water repellency (SWR) is a common phenomenon across agricultural soils of South Greenland that can negatively affect soil function and productivity. Existing methods to measure SWR as content (w) are laborious. This study was conducted determine the potential visible near-infrared spectroscopy (vis-NIRS), fast alternative method pedotransfer functions (PTFs), for predicting indices in 143...

1Assistant Professor, Department of Water Engineering, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran E-mail: [email protected], Af. Member of ASCE 2Research assistant, Nanjing hydraulic research institute, Geotechnical Engineering Department, Nanjing, P.R. China E-mail: [email protected] 3Assistant Professor, Department of Soil Science, Faculty of Agriculture, Khorasgan Is...

Computer models have been used to assess soil organic carbon (SOC) stock change. Commonly, models require to determine soil bulk density (Db), a variable that is often lacking in soil data bases. To partly overcome this problem, pedotransfer functions (PTFs) are developed to estimate Db from other easily available soil properties. However, only a few studies have determined the accuracy of thes...

1443 Soil Sci. Soc. Am. J. 73:1443-1452 doi:10.2136/sssaj2008.0021 Received 23 Jan. 2008. *Corresponding author ([email protected]). © Soil Science Society of America 677 S. Segoe Rd. Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information...

The unsaturated soil hydraulic properties, including soil water retention curve and hydraulic conductivity, are the crucial input parameters for simulating soil water and solute transport through the unsaturated zone at regional scales, and are expensive to measure. These properties are frequently predicted with pedotransfer functions (PTFs) using the routinely measured soil properties. 110 soi...

soil moisture retention curve is one of the soil hydraulic prosperities which its direct measurement is time consuming and expensive. therefore, indirect methods such as developing pedotransfer functions have been used to predict this characteristic from soil readily available or easily measurable data. in this study, multiple linear regression method was used to develop point pedotransfer func...

hydraulic attributes play important role in hydrological studies, soil conservation, designing irrigation and drainage systems, soil conservation, and controlling soil erosion in watersheds. their measurements are very tedious and time consuming and due to high spatial variability, a large number of measurements are required for obtaining reliable values. nowadays, prediction of these attribute...