INVESTIGADORES
VELASCO Ricardo Hugo
artículos
Título:
Tracing sediment sources in an agriculture and livestock catchment of Argentina through the use of geochemical fingerprints
Autor/es:
TORRES ASTORGA, R; H. VELASCO; DERCON, GERD; L. MABIT
Revista:
Soil Newsletter
Editorial:
International Atomic Energy Agency
Referencias:
Año: 2019 vol. 41 p. 24 - 26
ISSN:
1011-2650
Resumen:
Soil erosion and associated sediment redistribution are key environmental problems in Central Argentina. Specific land uses and management practices, such as intensive grazing and crop cultivation, are considered significantly driving and accelerating these processes.To prove this hypothesis, a mixing modelling approach (CSSIAR v2.00), using Energy Dispersive X Ray Fluorescence (EDXRF) and Total Organic Carbon (TOC) data as fingerprints for sediment sources and sinks, was applied for identifying critical hot spots of erosion in a typical Argentinian agro-ecosystem. The selected study site is the Estancia Grande catchment, covering 1235 hectares, which is located in the centre of Argentina 23 km north east of San Luis.
