Effect of Polyacrylamide Applications on Soil Hydraulic Characteristics and Sediment Yield of Sloping Land

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dc.contributor.author Li, Yi
dc.contributor.author Shao, Mingan
dc.contributor.author Horton, Robert
dc.contributor.author Horton, Robert
dc.contributor.department Agronomy
dc.date 2018-01-25T07:48:58.000
dc.date.accessioned 2020-06-29T23:04:50Z
dc.date.available 2020-06-29T23:04:50Z
dc.date.copyright Sat Jan 01 00:00:00 UTC 2011
dc.date.issued 2011-01-01
dc.description.abstract <p>The objective of this study is to determine how PAM applications to a fraction of the surface affect hydraulic parameters of flow, soil water infiltration and soil sediment yield during rainfall on steep sloping land. Five PAM application rates (PAMR) 0, 0.4, 0.7, 1.0 and 1.3 g kg-1 were used for 5 sloping plots in this study. As PAMR increased from 0 to 1.3 g kg-1 at the rainfall intensity (RI) of 1.58 mm min-1, the Froude numbers decreased from 34.7 to 9.1, the Reynolds numbers (Re) decreased from 568 to 305, and the Darcy–Weisbach coefficients increased from 0.0028 to 0.041. The total runoff values were 33.8, 35.9, 31.6, 25.6 and 18.1 mm when the PAMR were 0, 0.4, 0.7, 1.0 and 1.3 g kg-1, respectively. The cumulative sediment increased rapidly with the rainfall time. In conclusion, PAM applications to a fraction of soil surface can be effective at reducing the erosion of steep sloping land.</p>
dc.description.comments <p>This article is published as Li, Yi, Mingan Shao, and Robert Horton. "Effect of polyacrylamide applications on soil hydraulic characteristics and sediment yield of sloping land." Procedia Environmental Sciences 11 (2011): 763-773. doi: <a href="http://dx.doi.org/10.1016" target="_blank">10.1016/j.proenv.2011.12.118</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/392/
dc.identifier.articleid 1438
dc.identifier.contextkey 11408919
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/392
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4745
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/392/2011_Horton_EffectPolyacrylamide.pdf|||Fri Jan 14 23:55:41 UTC 2022
dc.source.uri 10.1016/j.proenv.2011.12.118
dc.subject.disciplines Agriculture
dc.subject.disciplines Hydrology
dc.subject.disciplines Sedimentology
dc.subject.disciplines Soil Science
dc.subject.keywords PAM application
dc.subject.keywords sediment yield
dc.subject.keywords roughness coefficient
dc.subject.keywords infiltration
dc.title Effect of Polyacrylamide Applications on Soil Hydraulic Characteristics and Sediment Yield of Sloping Land
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication d3fb0917-6868-417e-9695-a010896cfafa
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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