Virginia Tech
    • Log in
    View Item 
    •   VTechWorks Home
    • College of Agriculture and Life Sciences (CALS)
    • Sustainable Agriculture and Natural Resource Management (SANREM) Knowledgebase
    • View Item
    •   VTechWorks Home
    • College of Agriculture and Life Sciences (CALS)
    • Sustainable Agriculture and Natural Resource Management (SANREM) Knowledgebase
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Predicting effects of land use on runoff and sediment yield in selected sub-watersheds of the Manupali River using the ArcSWAT model

    Thumbnail
    View/Open
    3626_AlibuyogPPT_LESS_TEXT.pdf (4.439Mb)
    Downloads: 1834
    Date
    2008
    Author
    Alibuyog, N. R.
    Ella, Victor B.
    Reyes, Manuel R.
    Srinivasan, R.
    Heatwole, Conrad D.
    Dillaha, Theo A. III
    Metadata
    Show full item record
    Abstract
    The quantitative prediction of environmental impacts of land-use changes in watersheds could serve as a basis for developing sound watershed management schemes, especially for Philippine watersheds with agroforestry systems. This study was conducted to determine the effects of various land-use patterns on runoff, and sediment yield in selected sub-watersheds of the Manupali River using the ArcSWAT model. ArcSWAT is a river basin scale model developed to quantify the impact of land management practices on water, sediment, and agricultural chemical yields in large, complex watersheds with varying soils, land use, and management conditions over long periods of time. In this study, the model was parameterized and calibrated in selected Manupali River sub-watersheds with an aggregate area of 2,177 ha to simulate the hydrologic effects of land use. Initial simulation results showed that conversion of forest to agricultural lands causes serious erosion and sediment yield in the area. Agricultural lands planted with corn, potato, and tomato, which make up 22.38 percent of the sub-watershed area, resulted in an average annual sediment yield of 110.1 t/ha, with the areas planted with potato producing the largest sediment yield of 205 t/ha. Forest and pasture and/or grassland produced a sediment yield of 0.7 t/ha and 2.15 t/ha, respectively. On average, simulation results showed an annual sediment yield of 12.86 t/ha for the whole area. It is evident from these initial results that conversion of forest to agricultural lands coupled with poor agricultural management practices could lead to serious erosion problems. Further simulation work will be done to generate results that could serve as sound basis for policy formulation geared toward sustainable watershed and agroforestry management.
    URI
    http://hdl.handle.net/10919/68555
    Collections
    • Sustainable Agriculture and Natural Resource Management (SANREM) Knowledgebase [3994]

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us
     

     

    VTechWorks

    AboutPoliciesHelp

    Browse

    All of VTechWorksCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Log inRegister

    Statistics

    View Usage Statistics

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us