Robert MULEBEKE

Modeling soil loss in farming systems

Validation of a GIS based USLE in a banana-based microcatchment of Uganda''s L. Victoria basin

• Broschiertes Buch

Produktbeschreibung

Soil erosion is a wide spread phenomenon in Uganda's Lake Victoria Basin (LVB). Choice of appropriate conservation practices depends on accurate quantification of the magnitude of damage. Variability across a toposequence on catchment level makes assessment studies technically difficult and economically not feasible. However, Geographical Information Systems (GIS) can capture spatial variability. A GIS-based Universal Soil Loss Model was initialized and used in this study to; 1) validate the predicative capacity of the initialized GIS USLE model across the major land uses and soil types in the microcatchment, 2) Quantify the on-site damage in terms of soil loss, soil structure deterioration and nutrient loss. Run-off plot approach was used to collect runoff and sediment for soil and nutrient loss quantification. USLE parameters were obtained from: mean annual rainfall, soils map, Topomap, aerial photographs and satellite images using modeling operations in ILWIS. Applicability ofthe GIS-based USLE was demonstrated but calibration is essential. Land use had stronger influence on soil loss than slope.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 72
• Erscheinungstermin: 5. Dezember 2010
• Englisch
• Abmessung: 220mm x 150mm x 5mm
• Gewicht: 125g
• ISBN-13: 9783843378086
• ISBN-10: 3843378088
• Artikelnr.: 32664705

Autorenporträt

Robert Mulebeke, is a Lecturer of Soil Science at Kyambogo University, Uganda. He has keen interest in Soil-Water-Plant relationships. He is now a candidate on the Regional PhD programme in Dryland Resource Management under RUFORUM hosted at University of Nairobi, Kenya. Correspondences: [e-mail]