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dc.contributor.authorKulli, Beatrice-
dc.contributor.authorStamm, Christian-
dc.contributor.authorPapritz, Andreas-
dc.contributor.authorFlühler, Hannes-
dc.date.accessioned2018-10-25T12:41:07Z-
dc.date.available2018-10-25T12:41:07Z-
dc.date.issued2003-08-
dc.identifier.issn1539-1663de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/12132-
dc.description.abstractDye tracer experiments have often been used to study the prevailing flow regime, such as in investigating the role and extent of preferential flow of water. Flow patterns in two-dimensional profiles provide qualitative information on the infiltration regime but are difficult to analyze and compare quantitatively. The scope of this study was to develop a quantitative method to analyze the spatial distribution of the stained areas in vertical profiles, to identify differing transport mechanisms on the basis of the pattern information, and to analyze how the discriminated patterns correspond with soil properties and structure. Dye tracer infiltration experiments were performed on 25 plots at eight sites. The spatial distribution of the stained areas in vertical profiles was analyzed and compared using digital image processing. We first split the flow patterns into similarly stained horizontal layers based on the width distribution of stained areas. All of these layers identified in the flow patterns of all 25 plots were then partitioned into groups of layers with similar patterns by hierarchical clustering. The sequence of layers found in the pattern was finally interpreted with respect to transport mechanisms and qualitatively compared with the sequence of morphological layers observed in the soil profiles. The obtained classification reliably distinguished between zones of homogeneous infiltration and zones of preferential flow, but also between zones of narrow stained structures and zones of lateral spreading (e.g., sand or gravel lenses). Dye coverage and mean width of stained structures were the most indicative factors for the different clusters. We often found an agreement between the sequences of layers found in the flow patterns and the soil horizons. However, in all profiles we observed layers in the flow patterns that did not correspond to textural and structural layers observed in the filed. It seems that knowing the pedological horizons is important but not sufficient to understand the observed flow patterns. Since the flow pattern in a given layer always depends on the overlying soil layers, similarly textured soil layers do not necessarily exhibit equal patterns. However, soil layers with a given textural sequence (e.g., fine-course-fine) are reflected by typical flow patterns.de_CH
dc.language.isoende_CH
dc.publisherSoil Science Society of Americade_CH
dc.relation.ispartofVadose Zone Journalde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectImage analysisde_CH
dc.subjectPreferential flowde_CH
dc.subject.ddc630: Landwirtschaftde_CH
dc.titleDiscrimination of flow regions on the basis of stained infiltration patterns in soil profilesde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Umwelt und Natürliche Ressourcen (IUNR)de_CH
dc.identifier.doi10.2136/vzj2003.3380de_CH
zhaw.funding.euNode_CH
zhaw.issue3de_CH
zhaw.originated.zhawNode_CH
zhaw.pages.end348de_CH
zhaw.pages.start338de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume2de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedBodenökologiede_CH
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Kulli, B., Stamm, C., Papritz, A., & Flühler, H. (2003). Discrimination of flow regions on the basis of stained infiltration patterns in soil profiles. Vadose Zone Journal, 2(3), 338–348. https://doi.org/10.2136/vzj2003.3380
Kulli, B. et al. (2003) ‘Discrimination of flow regions on the basis of stained infiltration patterns in soil profiles’, Vadose Zone Journal, 2(3), pp. 338–348. Available at: https://doi.org/10.2136/vzj2003.3380.
B. Kulli, C. Stamm, A. Papritz, and H. Flühler, “Discrimination of flow regions on the basis of stained infiltration patterns in soil profiles,” Vadose Zone Journal, vol. 2, no. 3, pp. 338–348, Aug. 2003, doi: 10.2136/vzj2003.3380.
KULLI, Beatrice, Christian STAMM, Andreas PAPRITZ und Hannes FLÜHLER, 2003. Discrimination of flow regions on the basis of stained infiltration patterns in soil profiles. Vadose Zone Journal. August 2003. Bd. 2, Nr. 3, S. 338–348. DOI 10.2136/vzj2003.3380
Kulli, Beatrice, Christian Stamm, Andreas Papritz, and Hannes Flühler. 2003. “Discrimination of Flow Regions on the Basis of Stained Infiltration Patterns in Soil Profiles.” Vadose Zone Journal 2 (3): 338–48. https://doi.org/10.2136/vzj2003.3380.
Kulli, Beatrice, et al. “Discrimination of Flow Regions on the Basis of Stained Infiltration Patterns in Soil Profiles.” Vadose Zone Journal, vol. 2, no. 3, Aug. 2003, pp. 338–48, https://doi.org/10.2136/vzj2003.3380.


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