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Relationships of particle size distribution curve, soil water retention curve and unsaturated hydraulic conductivity and their implications on water balance of forested and agricultural hillslopes

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Jauhiainen, Mikko
dc.date.accessioned 2012-02-13T12:52:08Z
dc.date.available 2012-02-13T12:52:08Z
dc.date.issued 2004-09-03
dc.identifier.isbn 951-22-7195-8
dc.identifier.issn 1456-2596
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2438
dc.description.abstract The primary objectives of this study were to determine selected soil water retention curves for Finnish forest sites and to develop a methodology that predicts the water retention curve and unsaturated hydraulic conductivity from the particle size distribution curve. The method was obtained by modifying Andersson's method. Selected soil water retention curves were determined for four Finnish forest site types. Parameters of 360 soil samples were estimated. The samples were collected from 90 forest soil profiles. In each profile four podzol horizons were selected for sampling. The parameters are usable for water balance calculations of various scales. The study includes results of numerous water retention characteristics and hydraulic conductivity predictions from the particle size distribution curve. These predictions were accomplished for both forested and agricultural soils. Predicting water retention characteristics from particle size distribution curve could be accomplished at a reasonable level of accuracy when the semi-physical and van Genuchten's methods were used. Predicting the water retention characteristics using Jonasson's method was successful when clay content of soil was less than 25 percent. Implications of soil hydraulic properties on water balance of forested and agricultural hillslopes showed reasonable agreement with the measured values. The best overall fit between measured and calculated values was obtained in the case that water retention curve was estimated from particle size distribution curve and unsaturated hydraulic conductivity using Andersson's method. en
dc.format.extent 164
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Helsinki University of Technology Water Resources publications en
dc.relation.ispartofseries Teknillisen korkeakoulun vesitalouden ja vesirakennuksen julkaisuja fi
dc.relation.ispartofseries 12 en
dc.subject.other Environmental science en
dc.title Relationships of particle size distribution curve, soil water retention curve and unsaturated hydraulic conductivity and their implications on water balance of forested and agricultural hillslopes en
dc.type G4 Monografiaväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Civil and Environmental Engineering en
dc.contributor.department Rakennus- ja ympäristötekniikan osasto fi
dc.subject.keyword hydrology en
dc.subject.keyword soil water flow en
dc.subject.keyword water retention en
dc.subject.keyword hydraulic conductivity en
dc.identifier.urn urn:nbn:fi:tkk-003835
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (monografia) fi
dc.type.ontasot Doctoral dissertation (monograph) en
dc.contributor.lab Laboratory of Water Resources en
dc.contributor.lab Vesitalouden ja vesirakennuksen laboratorio fi
local.aalto.digifolder Aalto_64090
local.aalto.digiauth ask


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