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Article: A new equation for the soil water retention curve

TitleA new equation for the soil water retention curve
Authors
Issue Date2014
PublisherJohn Wiley & Sons. The Journal's web site is located at http://www.blackwellpublishing.com/journals/EJS
Citation
European Journal of Soil Science, 2014, v. 65, p. 584–593 How to Cite?
AbstractThe soil water retention curve is a fundamental characteristic of unsaturated zone flow and transport properties. Recent studies show that an air-entry value is needed in a soil water retention equation in order to provide a better prediction of relative hydraulic conductivity. A new equation considering the air-entry value is proposed to describe the soil water retention curve. The performance of the proposed equation is contrasted with a well-supported equation by comparing measured and calculated data for 14 soils, representing various soil textures, which range from sandstone to clay. Results show that the proposed equation provides adequate characterization of the soil water retention curves. The equation for predicting relative hydraulic conductivity is derived from the proposed soil water retention equation. An empirical equation for relative hydraulic conductivity is also used. Our results show that the agreement between the predicted and measured relative hydraulic conductivities is improved by the combinations of the proposed equation and the relative hydraulic conductivity equations. The proposed equation is mathematically simple and it can easily be implemented in unsaturated flow and multiphase flow numerical models.
Persistent Identifierhttp://hdl.handle.net/10722/200550
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKuang, Xen_US
dc.contributor.authorJiao, JJJen_US
dc.date.accessioned2014-08-21T06:51:41Z-
dc.date.available2014-08-21T06:51:41Z-
dc.date.issued2014en_US
dc.identifier.citationEuropean Journal of Soil Science, 2014, v. 65, p. 584–593en_US
dc.identifier.urihttp://hdl.handle.net/10722/200550-
dc.description.abstractThe soil water retention curve is a fundamental characteristic of unsaturated zone flow and transport properties. Recent studies show that an air-entry value is needed in a soil water retention equation in order to provide a better prediction of relative hydraulic conductivity. A new equation considering the air-entry value is proposed to describe the soil water retention curve. The performance of the proposed equation is contrasted with a well-supported equation by comparing measured and calculated data for 14 soils, representing various soil textures, which range from sandstone to clay. Results show that the proposed equation provides adequate characterization of the soil water retention curves. The equation for predicting relative hydraulic conductivity is derived from the proposed soil water retention equation. An empirical equation for relative hydraulic conductivity is also used. Our results show that the agreement between the predicted and measured relative hydraulic conductivities is improved by the combinations of the proposed equation and the relative hydraulic conductivity equations. The proposed equation is mathematically simple and it can easily be implemented in unsaturated flow and multiphase flow numerical models.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons. The Journal's web site is located at http://www.blackwellpublishing.com/journals/EJSen_US
dc.relation.ispartofEuropean Journal of Soil Scienceen_US
dc.rightsEuropean Journal of Soil Science. Copyright © John Wiley & Sons.en_US
dc.rightsSpecial Statement for Preprint only Before publication: 'This is a preprint of an article accepted for publication in [The Journal of Pathology] Copyright © ([year]) ([Pathological Society of Great Britain and Ireland])'. After publication: the preprint notice should be amended to follows: 'This is a preprint of an article published in [include the complete citation information for the final version of the Contribution as published in the print edition of the Journal]' For Cochrane Library/ Cochrane Database of Systematic Reviews, add statement & acknowledgement : ‘This review is published as a Cochrane Review in the Cochrane Database of Systematic Reviews 20XX, Issue X. Cochrane Reviews are regularly updated as new evidence emerges and in response to comments and criticisms, and the Cochrane Database of Systematic Reviews should be consulted for the most recent version of the Review.’ Please include reference to the Review and hyperlink to the original version using the following format e.g. Authors. Title of Review. Cochrane Database of Systematic Reviews 20XX, Issue #. Art. No.: CD00XXXX. DOI: 10.1002/14651858.CD00XXXX (insert persistent link to the article by using the URL: http://dx.doi.org/10.1002/14651858.CD00XXXX) (This statement should refer to the most recent issue of the Cochrane Database of Systematic Reviews in which the Review published.)en_US
dc.titleA new equation for the soil water retention curveen_US
dc.typeArticleen_US
dc.identifier.emailKuang, X: hkukxx@hku.hken_US
dc.identifier.emailJiao, JJJ: jjiao@hku.hken_US
dc.identifier.authorityJiao, JJJ=rp00712en_US
dc.identifier.doi10.1111/ejss.12152en_US
dc.identifier.hkuros232026en_US
dc.identifier.volume65en_US
dc.identifier.spage584–593en_US
dc.identifier.epage584–593en_US
dc.identifier.isiWOS:000339381200016-

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