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    Determining soil erodibility of forest roads

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    Author
    Ulman, Peggy Lyn, 1966-
    Issue Date
    1994
    Keywords
    Engineering, Civil.
    Environmental Sciences.
    Advisor
    Lopes, Vicente L.
    
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    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Soil loss was measured on selected unsurfaced forest roads in Idaho and Colorado, using a rainfall simulator. From the data collected, both flow-induced and raindrop-induced interrill erodibility parameters were determined. Each forest road site consisted of one 5 m² and on 1 m² plot which simultaneously received artificial rainfall. Soil loss from the small plots was attributed solely to detachment by raindrops. The larger 5 m² plots may include some flow-induced soil loss. A method was developed to apportion the erosion from the 5 m² plots between flow-induced and raindrop-induced soil loss. Four different models of raindrop-induced erodibility and three different models of flow-induced erodibility were compared. Those considered most applicable to forest road conditions were suggested for further use in an erosion model for disturbed forestlands. This study serves an an important contribution in developing such a model by providing initial estimates of interrill erodibility parameters for forest road conditions.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Renewable Natural Resources
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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