HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (7) Citing Articles via Google Scholar Google Scholar Articles by Peng, X. Articles by Horn, R. Search for Related Content PubMed Articles by Peng, X. Articles by Horn, R. GeoRef GeoRef Citation Agricola Articles by Peng, X. Articles by Horn, R. Related Collections Soil Physics Soil Models Soil Compaction

Soil Physics

Modeling Soil Shrinkage Curve across a Wide Range of Soil Types

^a Institute of Plant Nutrition and Soil Science, CAU Kiel, Olshausenstr. 40, D-24118 Kiel, Germany
^b Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008, People's Republic of China

^* Corresponding author (xh.peng{at}soils.uni-kiel.de)

Knowledge about soil shrinkage improves the understanding and prediction of unsaturated hydraulic properties in nonrigid soils. Until now, there is no general model available, which is widely accepted and applied to quantify soil shrinkage curves. The objectives in this present paper are (i) to propose a new and simple model and to test it with a wide range of soil types; (ii) to mathematically distinguish the shrinkage zones; and (iii) to evaluate probable physical meaning of its parameters. The results show that the modified van Genuchten water retention curve model fits the data obtained from Reeve and Hall's six soils, Talsma's three soils and three Typic Chromexert' soils well and the correlation coefficients in the tested 12 soils are always higher than 0.995. The different shrinkage zones defined by the mathematical method agree well with actual soil shrinkage curve. The proportional shrinkage zone accounts for 30.9 to 79.9% of the total water loss and 63.5 to 93.9% of the total volume decrease, while the zero shrinkage zone only accounts for <2.7% of the total volume decrease. The , n, and m parameters of the modified van Genuchten model control soil shrinkage curve.

This article has been cited by other articles:

				X. Peng, R. Horn, and A. Smucker Pore Shrinkage Dependency of Inorganic and Organic Soils on Wetting and Drying Cycles Soil Sci. Soc. Am. J., June 8, 2007; 71(4): 1095 - 1104. [Abstract] [Full Text] [PDF]

				V. Y. Chertkov The Reference Shrinkage Curve at Higher than Critical Soil Clay Content Soil Sci. Soc. Am. J., April 5, 2007; 71(3): 641 - 655. [Abstract] [Full Text] [PDF]

				D. D. Fritton Fitting Uniaxial Soil Compression Using Initial Bulk Density, Water Content, and Matric Potential Soil Sci. Soc. Am. J., June 21, 2006; 70(4): 1262 - 1271. [Abstract] [Full Text] [PDF]

				P. Boivin, P. Garnier, and M. Vauclin Modeling the Soil Shrinkage and Water Retention Curves with the Same Equations Soil Sci. Soc. Am. J., May 23, 2006; 70(4): 1082 - 1093. [Abstract] [Full Text] [PDF]

				L. R. Ahuja, L. Ma, and D. J. Timlin Trans-Disciplinary Soil Physics Research Critical to Synthesis and Modeling of Agricultural Systems Soil Sci. Soc. Am. J., February 2, 2006; 70(2): 311 - 326. [Abstract] [Full Text] [PDF]