Autoecology of sweet-chestnut stands in Catalonia (Spain)
Abstract
Optimum and marginal parameter ranges have been established for defining landform, climatic and soil habitat diagrams of chestnut (Castanea sativa Miller) woodstands in Catalonia. Such diagrams show that most of the Catalonian chestnut stands are located on soils developed from igneous rocks, with predominant sandyloamy textures. According to FAO criteria, soils are classified as Cambisols. Although soil water holding capacities are considerably low, it does not occur significant drought stress. Despite their relatively high acidity, soil humus form are forest mull. Moreover, several silvicultural parameters have been calculated. After their correlation with the ecological ones, it is concluded that the best chestnut forest sites are located around 750 m elevation, with 240 mm spring rainfall, 11.5 ºC mean annual temperature, and 20 ºC mean temperature at the hottest month.Downloads
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