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handle: 10261/47261
[ES]: Se estudia el efecto de las obras de regeneración en diversas características de los suelos de zonas elevadas (relativamente poco inundables) de la Marisma Gallega, en el Parque Natural de Doñana. Se trata de suelos típicos de la marisma salina del Guadalquivir (pesados, carbonatados y salino-sódicos) que fueron, en parte, sometidos a la retirada del horizonte superficial para rellenar el sistema de canales de drenaje construido durante los intentos de puesta en cultivo de la zona, a principios de los años 70. Como resultado de estas obras se generó una superficie considerable de zonas con el suelo decapitado y vegetación destruida (zonas de préstamo o arrastre), junto a un conjunto de canales rellenados (zonas de relleno).
[EN]: We studied the effect of restoration practices on 17 soil variables on river banks of a wetland located next to the Doñana National Park (SW Spain). At the beginning of the 70s, this area had been partially drained for agricultural uses, by digging open channels. During the 2000-2001 dry seasons (June-October), most of the channels were filled by bulldozers, using the topsoil of the surrounding natural areas as filling materials. Three different kinds of topsoil material are compared: that of sites unaffected by restoration practices (control); that of dug sites (whose topsoil had been removed, exposing the underlying horizons), and that of refilled channels.
10 páginas, 2 figuras, 2 tablas, 14 referencias.-- Capítulo 2: Contaminación y recuperación de suelos.-- II congreso Ibérico de la Ciencia del Suelo, celebrado del 13-17 junio 2006, en Huelva (ESpaña), como parte de la actividad científica de la Sociedad Española de la Ciencia del Suelo (SPCS) y la Sociedade Portuguesa da Ciencia do Solo (SPCS).
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