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Recuperación de Suelos Degradados con Cultivos Energéticos: Producción de Biomasa e Impactos en el Funcionamiento del Suelo

Authors: Domínguez, María Teresa; Madejón, Paula; Fernández Boy, E.; Paneque, Patricia; Girón Moreno, Ignacio F.; Madejón, Engracia;

Recuperación de Suelos Degradados con Cultivos Energéticos: Producción de Biomasa e Impactos en el Funcionamiento del Suelo

Abstract

[ES]: El establecimiento de cultivos energéticos, sin fines alimentarios, en zonas degradadas podría ser una alternativa para la gestión de estas zonas, en donde no competirían por la producción de alimentos. Para ello, es necesario explorar el potencial de especies vegetales nativas con fines bioenergéticos. En esta comunicación se resumen varias experiencias sobre el uso potencial de dos especies nativas mediterráneas (Silybum marianum y Cynara cardunculus) como cultivos energéticos para la recuperación de suelos mediterráneos degradados. Se presentan los resultados de producción de biomasa, asi como el seguimiento dealgunos indicadores físico-químicos y biológicos de recuperación de los suelos de dos cultivos experimentales, establecidos en condiciones de suelo contrastadas (suelo contaminado por elementos traza vs. suelo degradado por pérdidas de materia orgánica), en los que se testaron distintas combinaciones de planta y enmienda de suelo (espuma de azucarera y compost de biosólidos). Los resultados sugieren que S. marianum es más resistente a la contaminación del suelo por elementos traza que C. cardunculus, mientras que en suelos menos adversos C. cardunculus ofrece los mejores resultados en cuanto a producción de biomasa lignocelulósica. Los efectos positivos de las enmiendas en los parámetros bioquímicos de funcionamiento del suelo se potenciaron en los suelos más degradados

[EN]: The establishment of bioenergy crops, not used for food production, on degraded lands might be an alternative for the management of these lands, which could boost the interest for the revegetation of degraded areas. For this purpose, it is necessary to explore the potential of native Mediterranean plants as bioenergy crops. In this communication we summarise several experiments that have assessed the potential of two native Mediterranean plant species (Silybum marianum and Cynara cardunculus) as bionergy crops for Mediterranean degraded lands. Physico-chemical and biological indicators of the recovery of soil functions were monitored over two years in two experimental crops established on contrasted degraded soils (soil contaminated by trace elements vs. soil degraded by organic matter loss), where different combinations of plant and amendment (sugar beet lime and biosolid compost) were tested. Results suggest that S. marianum is more resistant to soil contamination than C. Cardunculus, while in the less degraded soil C. Cardunculus provides a greater production of lignocellulosic biomass. The positve effects of soil amendments on biochemical indicators of soil functioning were enhanced in the most degraded (contaminated) soil.

4 páginas.-- 2 figuras.-- 3 referencias.-- Póster presentado en el VIII Congreso Ibérico de las Ciencias del Suelo. VIII Congresso Ibérico de Ciências do Solo. DONOSTIA-SAN SEBASTIÁN. 20 - 22 junio 2018..-- El documento completo se encuentra para su descarga en http://www.cics2018.com/libro-de-abstracts/

Ministerio de Economía y Competitividad por el proyecto BIORESMED (AGL2014-55717-R).

No

Keywords

Silybum marianum, Enmiendas, Respiración de suelo, PLFA, Cynara cardunculus

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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.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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