Quantifying the contributions of sediment, sediment-P and fertiliser-P from forested, cultivated and pasture areas at the landuse and catchment scale using fallout radionuclides and geochemistry

Abstract In this paper we use a combination of fallout nuclides and geochemistry to determine the contributions of sediment and sediment bound phosphorus (sed-P) from the major diffuse sources in the Bundella Creek catchment (8700 ha), NSW, Australia. Sources include surface erosion from cultivated, pasture and steep forested land as well as subsoil erosion from channels and gullies. We determine these contributions to the

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