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首页> 外文期刊>Journal of Sustainable Development >Using 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
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Using 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

机译：使用土壤和水评估工具（SWAT）评估菲律宾棉兰老岛Layawan流域的物质转移及其对支付生态系统服务费的影响

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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.
机译：土壤和水是流域中最重要的资源。这些资源的数量和质量的变化不仅会产生现场影响，而且也会受到非现场社区的体验。评估物质转移，并确定菲律宾棉兰老岛拉雅湾流域的重要子流域;使用了土壤和水评估工具（SWAT）模型。该模型还用于调查土地使用的变化。结果表明，如果实施基于社区的流域管理计划，关键子流域的泥沙浓度和泥沙产量将减少4％。另一方面，如果在关键子流域开垦主要用于农业的森林，则其沉积物浓度和沉积物产量将增加106％。对沉积物产量和沉积物浓度进行建模，对于帮助决策者，环境经理和发展机构预测活动对土壤和水质的影响，并指导他们实施生态系统服务付费（PES）计划至关重要。生态系统服务的量化一直是围绕生态系统服务的成功所面临的主要挑战。研究表明，在拉ya湾流域，土地变化的使用不太可能影响水量，但是会严重影响水质。建模提供了一种有效且高效地管理流域的途径。在开源GIS上运行的SWAT可以帮助预算有限的政府部门和开发机构更好地预测计划和项目对流域的影响。

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