ICRAF Publication Detail Page

  • Contact persons
  • Melinda Firds
    Program Management Unit Assistant
    World Agroforestry (ICRAF)
    Jl. CIFOR, Situ Gede, Sindang Barang,
    Bogor Barat - Indonesia 16115
    Tel: +62 2511 8625415
    Fax: +62 2511 8625416
    Email: icrafseapub@cgiar.org

Publication Details

Journal Article
JA0485-13
Article TitleUsing the Soil and Water Assessment Tool (SWAT) to Assess Material Transfer in the Layawan Watershed, Mindanao, Philippines and Its Implications on Payment for Ecosystem Services
AuthorLeo Kris Mariano Palao, Moises M. Dorado, Kharmina Paola Angat Anit and Rodel D. Lasco
Year2013
Journal TitleJournal of Sustainable Development
InstitutionCanadian Center of Science and Education
Volume6
Issue6
Pages73-88
Call NumberJA0485-13
KeywordsSWAT, modeling, soil erosion, sedimentation, watershed, Layawan Watershed, Payments for Ecosystem Services (PES), land use change
Abstract:
Soil and water are the most important resources in the watershed. The alterations on the quantity and quality of these resources do not only have on-site impacts, but are experienced by off-site communities as well. To assess the material transfer and identify critical sub-basins in the Layawan Watershed, Mindanao, Philippines; the Soil and Water Assessment Tool (SWAT) Model was used. The model was also used to investigate changes in land use. Results show that a 4% reduction in sediment concentration and sediment yield in the critical sub-basins will be achieved if the community-based watershed management plan is implemented. On the other hand, there will be a 106% increase in sediment concentration and sediment yield if forests are cleared for utilization, primarily for agriculture, in the critical sub-basins. Modeling sediment yield and sediment concentration is important to help policy makers, environmental managers, and development agencies predict the impact of activities on soil and water quality, as well as guide them in the implementation of payments for ecosystem services (PES) schemes. The quantification of ecosystem services has been a major challenge surrounding the success of PES. In the Layawan Watershed, it is shown that land change use will not likely affect water quantity, it will, however, heavily impact water quality. Modeling provides an avenue to manage watersheds effectively and efficiently. SWAT running on open source GIS could help budget-constrained government units and development agencies to better predict the impact of programs and projects on watersheds.
Download file(s): Click icon to download/open file.
  File Size Description
download file - URL
GRP 4: Reducing risks to land health and targeting agroforestry interventions to enhance land productivity and food availability
Viewed in 1553 times. Downloaded in 410 times.