
handle: 10261/84222
[ES]Se estudia la fertilidad de los suelos de la zona fronteriza con Portugal comprendida entre Sierra de la Culebra y la Cordillera Central. De Norte a Sur descienden las precipitaciones, aumenta la temperatura media y, por consiguiente, el índice de aridez. Las rocas dominantes son pizarras y granitos del Paleozoico, generalmente ácidas. Las unidades de suelos más frecuentes son: Cambisol húmico ácido, Cambisol dístrico, Cambisol eútrico-dístrico, Acrisol húmico, Acrisol gleico y Gleisol. Los suelos son ácidos o fuertemente ácidos, muy pobres en fósforo y calcio. En consecuencia, se trata de una zona marginal para el cultivo. Dentro de la zona está la comarca de los Arribes del Duero de clima y cultivos mediterráneos; el porvenir agrícola de esta comarca depende del control de la erosión por lo que la acción humana puede considerarse como el principal factor que actúa sobre la fertilidad de los suelos.
[EN]The fertility of the soils of the border zone with Portugal, between Sierra de la Culebra and Cordillera Central, is studied. From North to South rainfall decreases, the mean temperature increases and therefore so does the aridity index. The prevailing rocks are shale and Paleozoic granites, generally acid. The most frequent soil units are: humic acid Cambisol, dystric Cambisol, dystric-eutric Cambisol, humic Acrisol, gleyc Acrisol and Gleysol. The soils are acid of strongly acid, very poor in phosphorus and calcium. Consequently it is a marginal zone for cropping. Within the zone is the Arribes of Duero territory, with mediterranean climate and crops; the agricultural future of this territory depends on the control of erosion and thus human action may be considered as the main factor affecting soil fertility.
15 páginas, 1 tabla, 5 figuras. -- Con la colaboración técnica de: N. Najac Ballesteros, Mª Cruz Macarro y Mª Dolores Rivas
Peer reviewed
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