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Recuperación de suelos contaminados por elementos traza mediante fitotecnologías de estabilización

Authors: Pardo Iglesias, Tania;

Recuperación de suelos contaminados por elementos traza mediante fitotecnologías de estabilización

Abstract

La contaminación de suelos por elementos traza (ETs) debida a la actividad minera conlleva la degradación de su capacidad para desarrollar plenamente sus funciones ecológicas potenciales, pudiendo además afectar a los ecosistemas adyacentes. En este sentido, una de las técnicas medioambientalmente más respetuosas para la recuperación de zonas mineras es la fitoestabilización. El objetivo principal de la presente investigación fue estudiar, en suelos mineros contaminados por ETs, el efecto de la aplicación de técnicas de fitoestabilización basadas en el uso de enmiendas orgánicas y plantas autóctonas, sobre las propiedades que determinan la salud del suelo. Así, se desarrollaron ensayos bajo tres escalas de experimentación: laboratorio, cámara de cultivo y campo, utilizando tres suelos de la Sierra Minera de La Unión-Cartagena (Murcia) con diferente grado de contaminación (moderado, alto y extremo); como enmiendas, compost de alperujo, purín de cerdo, cal hidratada y fertilizante NPK; y tres especies vegetales, Lolium perenne, Atriplex halimus y Bituminaria bituminosa. Los resultados indicaron que la adición de los materiales orgánicos mejoró la función hábitat del ecosistema edáfico, reactivó los ciclos biogeoquímicos de los principales elementos y redujo la dispersión de los ETs a los ecosistemas adyacentes, mejorando por tanto, la salud y funcionalidad de los suelos. Todo ello mostró que la utilización de compost de alperujo y de purín de cerdo, especialmente en combinación con A. halimus, es una estrategia eficaz para la recuperación de la salud de los suelos contaminados propios de la Sierra Minera de La Unión, siendo esta fitotecnología aplicable a gran escala y extrapolable a suelos con similares características.

Resumen de Tesis Doctoral (con Mención Europea), Departamento de Conservación de Suelos y Agua y Manejo de Residuos Orgánicos, CEBAS-CSIC. Departamento de Biología Animal, Ecología, Parasitología, Edafología y Química Agrícola, Universidad de Salamanca. 1 de Marzo 2013, Directores: Dra. Mª Pilar Bernal Calderón y Dr. Rafael Clemente Carrillo.

Country
Spain
Keywords

Environmental sciences, Fitoestabilización, Salud del suelo, Elementos traza, GE1-350, Ecología

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
gold