Modeling of Sediment Export and Retention Capacity of Land covers in Taguibo Watershed, Butuan City, Philippines using InVEST-SDR

Soil erosion stands as the predominant cause of land degradation on a global scale.This paper presents the utilization of the InVEST-SDR model to quantify the sediment export and retention capacity of Taguibo River based on different land cover types.The Integrated Valuation of Ecosystem Services and Tradeoffs-Sediment Delivery ratio (InVEST-SDR) model was used for quantification and mapping.Data such as Land Use Land Cover (LULC), Digital Elevation Model (DEM), rainfall, soil, and other biophysical parameters were incorporated as primary input data.The results demonstrate that palm cultivation contributes most significantly to sediment export, with 785.87 tons/year, 270.03 tons/year, and 918.58 tons/year in 2011, 2016, and 2021, respectively.Followed by forest, with contributions of 178.9 tons/year, 106.89 tons/year, and 184.84 tons/year in the same years.Emphasizing the crucial role of forests in mitigating soil erosion and maintaining watershed health.