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Descripción
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| Between 1950 and 1970, an extensive reforestation plan was carried out in La Pedriza (Sierra de Guadarrama, North of Madrid), that led to a profound transformation of the composition and structure of natural vegetation. Until that time, the mosaic of cattle farming and rocks interspersed with a variety of species defined the pattern of the landscape. These elements were replaced by dense reforested areas that changed the landscape configuration, and were composed of monospecific pine forests s or non-native species (mainly Pinus pinaster, but also P. sylvestris and P. uncinata; Cedrus sp., Cupressus sp.). Although the increase of variety at macro-landscape scale observed, the analysis of the impact of these interventions revealed a decrease in the floristic richness, compared with the original composition. The lack of selvicultural activity has also led to poor conditions of woodland: the canopy contact was a limitation for the development of the underlying vegetation and represented an aggravating factor in case of fire. The presence of death trees and the amount of dry residue deposited on the ground was also a risk factor. The forest restoration proposed is designed as consecutives extractions of trees to obtain the landscape with the original composition and structure. The lost of tree cover could be apparently opposite to forest restoration guidelines. However, this would reintroduce a higher level of diversity and a more complex functions at long-term. In an area frequently visited by the public, it is compulsory to consider at the same level of importance the ecological function and the social services of landscape. Consequently, the actions are designed to avoid a drastic visual impact. As a result, a management strategy is proposed to recover the spontaneous vegetation, with the original structure and density, applying a long-term process that could minimize the environmental and social problem generated. The criteria to achieve the objectives have their arguments in the paleobotanical analysis and the historic information registry, as well as in the observation of less disturbed areas. | |
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Internacional
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Si |
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Entidad
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IUFRO Conference. Restoring Forests: Advancs in Techniques and Theory |
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Lugar
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Madrid (España) |
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Páginas
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Referencia/URL
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Tipo de publicación
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Comunicación Póster |