Campus Units
Agronomy
Document Type
Article
Publication Version
Published Version
Publication Date
2011
Journal or Book Title
Procedia Environmental Sciences
Volume
11
Issue
Part B
First Page
763
Last Page
773
DOI
10.1016/j.proenv.2011.12.118
Abstract
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.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.
Copyright Owner
Elsevier Ltd
Copyright Date
2011
Language
en
File Format
application/pdf
Recommended Citation
Li, Yi; Shao, Mingan; and Horton, Robert, "Effect of Polyacrylamide Applications on Soil Hydraulic Characteristics and Sediment Yield of Sloping Land" (2011). Agronomy Publications. 392.
https://lib.dr.iastate.edu/agron_pubs/392
Comments
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: 10.1016/j.proenv.2011.12.118. Posted with permission.