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Abstract
In this paper is carried out the study of soils and vegetation and their relationships with the different medicinal plant species in the zonal ecosystem of Sierra Elvira (Granada, Spain). Firstly Holm-oak woods, Kermes-oak woods, Brooms and Perennial pastures are studied. To determine the different ecosystems being in the area referring to soil and plant, two mode pro files of soil have been sampled an analysed, one of them under Kermes-oak and the other under Holm-oak, and several flowery inventories have been carried out. Plants with a possible medicinal effect have been collected and analyzed in every studied area. Soils can be described as follows: moderately thickness, clayey-skeletal particle-size classes, high organic carbon content (C/N 12-14) and saturated exchange-complex (free carbonates and approximately 8 pH). The difference between them is their development, being more developed the soils under Holm-oak woods. They are classifies as Rendinzas. Sierra Elvira according to its vegetation is totally included in the mesomediterranean betica and marianico-monchiquense Holm-oak serie. The potential vegetation consists of Holm-oak woods of Poeonio-Quercetum rotundi ¡olioe association. The medicinal or possibly medicinal plants are very numerous in these ecosystems. Among them the Asphodelus albus Miller subesp. albus is distinguished because of its high content in antraquinons. Soil and vegetation relationschips are complex due to two reasons: firstly strong anthropic actions which has deeply modified vegetation and soils, and secondly soils relationships with different factors such as relief, parent material and time.
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