Evento
Use of geochemical fingerprints to trace sediment sources in an agriculture catchment of Argentina
Torres Astorga, Romina Vanesa
; Borgatello, Gisela Natalia
; Velasco, Ricardo Hugo
; Padilla, R.; Dercon, G.; Mabit, l.
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Tipo del evento:
Simposio
Nombre del evento:
Global Symposium on Soil Erosion
Fecha del evento:
15/05/2019
Institución Organizadora:
Food and Agriculture Organization of the United Nations;
Título del Libro:
Proceedings of the Global Symposium on Soil Erosion
Editorial:
Food and Agriculture Organization of the United Nations
ISBN:
978-92-5-131684-9
Idioma:
Inglés
Clasificación temática:
Resumen
This research focuses on the identification of suitable soil tracers from hot spots of land degradation andsediment fate in an agricultural catchment of central Argentina with erodible loess soils. Using EnergyDispersive X-Ray Fluorescence (EDXRF) for geochemical characterization, element concentrations wereused as soil tracers.Tracers were identify using two artificial mixtures composed of known proportions of soil sources collectedin different sites with distinctive soil uses. Phosphorus, iron, calcium, barium, and titanium were identifiedfor obtaining a best suitable reconstruction of the source proportions in the artificial mixtures. Then, theseelements as well as the total organic carbon were applied for identifying critical hot spots of erosion in thecatchment. Feedlots were identified to be the main source of sediments, river banks and dirt roadstogether are the second most important source. This case study provides key information for improvingsoil conservation strategies and selecting land management practices and land uses that do not contributeconsiderably to sediment redistribution.
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Eventos de INST. DE MATEMATICA APLICADA DE SAN LUIS
Eventos de INST. DE MATEMATICA APLICADA DE SAN LUIS
Citación
Use of geochemical fingerprints to trace sediment sources in an agriculture catchment of Argentina; Global Symposium on Soil Erosion; Roma; Italia; 2019; 289-293
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