English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/94940
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Distribution of heavy metals in rice farming soils of a coastal wetland (L'Albufera de Valencia, Spain)

Autor Andreu Pérez, V. ; Gimeno-García, Eugenia ; Pascual, Juan Antonio
Fecha de publicación jul-2012
EditorEuropean Confederation of Soil Science Societies
Citación EUROSOIL 2012
ResumenOne of the most important zones on rice production in Europe is located in Valencia (Spain), in particular in the coastal wetland of L'Albufera. This wetland, included in the RAMSAR Agreement, was in great part drained and converted to rice farming during the XIX century. In this rice area, 18 sampling zones were selected to determine the degree of heavy metals incidence in soils. Total concentrations of Cd, Co, Cr, Cu, Ni, Pb, and Zn were evaluated. Their distribution in the surficial and sub-surficial horizons was determined together with the temporal variability of metals concentrations during 1991-2009. Results show that the highest metal concentrations correspond to Zn, Cr and Cu. However, all metals have levels below the limits established by legislation, except for Cr that exceeds them in several zones showing a maximum of 254.93 ppm. In general, heavy metals showed an accumulation in soil surface, except for Co that has their highest values in the AB horizon. Soil salinity and related cations, mainly Na and K, are the main parameters that control the behavior of metals in these soils. Co, Cr, Pb and Zn contents are the parameters more influenced by this. This could be due to climate changes toward a high aridity, which could affect the concentration of salts and the marine intrusion in this area. Cu and Zn also show strong relationships with the available phosphorous levels. Through the study of the temporal evolution of these metals, a general decrease of their concentrations in the subsurface horizons was observed, except for the case of Cr.
Descripción Ponencia presentada en EUROSOIL 2012 celebrado en Bari (Italia) del 2 al 6 de julio de 2012
URI http://hdl.handle.net/10261/94940
Aparece en las colecciones: (CIDE) Comunicaciones congresos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
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.