The need to quantify and evaluate the impact of various land use changes on the hydrology and soil erosion in a landscape is of prime importance in watershed resource management. With appropriate methodology, the on- site effect of soil erosion on soil productivity and the off-site effect on water quality and quantity are better understood and mitigated. This study was aimed to develop and validate descriptive method, using GIS–assisted soil erosion modelling, that will be able to capture and measure the effects of the major factors that contribute to runoff, erosion and sedimentation at a watershed scale. The approach is sensitive in identifying the areas in a catchment that are erosion proned or “hot spots” so that mitigation works could be successfully targeted. In addition, the stream flow and sediment load are also measured and/or predicted for assessing the off- site effects of soil erosion.
Publication year
2000
Authors
Paningbatan E P; Cruz R V O; Bantayan N C; Marquez M L; Cuizon M
Language
English
Keywords
development, fields, methods, sediment
Geographic
Philippines
