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  • Soil erodibility and its estimation for agricultural soils in China

    Author(s)
    Zhang, KL
    Shu, AP
    Xu, XL
    Yang, QK
    Yu, B
    Griffith University Author(s)
    Yu, Bofu
    Year published
    2008
    Metadata
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    Abstract
    Soil erodibility (the K factor in the Universal Soil Loss Equation, USLE) is an important index to measure soil susceptibility to water erosion, and an essential parameter needed for soil erosion prediction. To evaluate the appropriateness of the nomograph and other methods for estimating the K factor for the USLE and to develop a relationship for soil erodibility estimation for Chinese soils, a set of soil erodibility values was calculated using soil loss data from natural runoff plots at 13 sites in eastern China. The definition of soil erodibility in relation to the USLE was strictly followed. Comparing these measured ...
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    Soil erodibility (the K factor in the Universal Soil Loss Equation, USLE) is an important index to measure soil susceptibility to water erosion, and an essential parameter needed for soil erosion prediction. To evaluate the appropriateness of the nomograph and other methods for estimating the K factor for the USLE and to develop a relationship for soil erodibility estimation for Chinese soils, a set of soil erodibility values was calculated using soil loss data from natural runoff plots at 13 sites in eastern China. The definition of soil erodibility in relation to the USLE was strictly followed. Comparing these measured values to those estimated using the nomograph method, the method adopted for the EPIC model and the formula of Shirazi and Boersma, we found that all these estimated soil erodibility values were considerably higher than the measured soil erodibility for these sites in eastern China. Soil erodibility for these Chinese sites is typically in the range from 0.007 to 0.02 t h (MJ mm)-1 and consistently lower in comparison to the measured K values from the USLE database for the conterminous United States. Strong linear relationship between the estimated and measured K values were used to develop empirical formulas for soil erodibility estimation from soil survey data for sites in eastern China.
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    Journal Title
    Journal of Arid Environments
    Volume
    72
    Issue
    6
    DOI
    https://doi.org/10.1016/j.jaridenv.2007.11.018
    Subject
    Earth sciences
    Environmental sciences
    Biological sciences
    Publication URI
    http://hdl.handle.net/10072/23469
    Collection
    • Journal articles

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