English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/154515
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 0 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)

Fate of 210Pbex fallout in soil under forest and scrub of the central Spanish Pre-Pyrenees

Autor Gaspar Ferrer, Leticia ; Webster, R.; Navas Izquierdo, Ana
Fecha de publicación may-2017
EditorJohn Wiley & Sons
Citación Gaspar L, Webster R, Navas A. Fate of 210Pbex fallout in soil under forest and scrub of the central Spanish Pre-Pyrenees. European Journal of Soil Science 68: 259–269 (2017)
ResumenThe characteristics and distribution of unsupported radioactive lead-210 (210Pbex) in soil and the relations between the radionuclide and soil properties determine its fate within the environment. We have explored the distribution of 210Pbex in stony soil profiles near the edge of the Ebro basin in northern Spain, the role played by vegetation in that distribution, and the relation between the radionuclide and organic carbon. We describe in detail the profiles of 210Pbex at 23 sites, 10 under forest and 13 under scrub, which were sampled at 2-cm intervals to a maximum depth of 14 cm. The theoretical distribution of 210Pbex follows an exponential decline with depth in undisturbed soil, assuming minimal surface slope and no evidence of erosion or deposition processes. Comparable distribution patterns of 210Pbex and organic C became evident from the analyses. There were significant correlations between the activity of 210Pbex and organic C under both forest and scrub, but the strongest were in the surface layers of soil under forest. More than 80% of the total activity of 210Pbex was adsorbed in the upper 6 cm, with an exponential decline with increasing depth. The decline was modelled with exponential functions fitted by non-linear least-squares regression to predict the depth distributions of 210Pbex and organic C in forest and scrub soils separately. The results confirm the viability of the use of 210Pbex in stony soil as an indicator of soil redistribution and show the significant effect of vegetative cover. These results provide useful information about sampling design for future research if the radionuclide 210Pbex is used for assessing soil redistribution in similar Mediterranean environments.
Descripción 39 Pags.- 5 Figs.- 5 Tabls.- Suppl. Inf. (2 Figs., 2 Tabls.). The definitive version is available at: http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2389/
Versión del editorhttps://doi.org/10.1111/ejss.12427
URI http://hdl.handle.net/10261/154515
Aparece en las colecciones: (EEAD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
GasparL_EuropJSoilSci_2017.docx.pdf Embargado hasta 1 de junio de 20181,61 MBAdobe PDFVista previa
Visualizar/Abrir     Petición de una copia
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.