Managed Grasslands: Analytical Studies, Parte1R. W. Snaydon, Alicja I. Breymeyer Elsevier, 1987 - 285 páginas Although ecologists have tended to regard agricultural ecosystems as unsuitable subjects for study, some of the most intensive studies of ecosystem processes have been made on agricultural ecosystems, and especially on grassland ecosystems. Agricultural ecosystems are generally simpler, and therefore easier to study than natural ecosystems, and the resulting studies have yielded a vast amount of information and many new research techniques have been developed. This volume, with its two main themes of energy flow and nutrient cycling in managed grasslands, is the first to treat these two subjects in an integrated way. Energy flow is considered mainly in the context of primary and secondary productivity, while nutrient cycling is considered especially in the context of fertilizer use. The result is not just a description of managed grassland ecosystems, but a bridging of the gap between ecological principles and agricultural practice. Ecologists will value the wealth of information, ideas and techniques that have resulted from managed grasslands studies - much of which is applicable to natural ecosystems. Agronomists will be interested in the ecological processes and principles underlying current management practices. |
Contenido
THE SPATIAL DIFFERENTIATION | 1 |
Proportion between meadows and pastures | 7 |
J ARES Pietermaritzburg 3200 South Africa | 28 |
Derechos de autor | |
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Managed Grasslands: Analytical Studies, Parte1 R. W. Snaydon,Alicja I. Breymeyer Vista de fragmentos - 1987 |
Managed Grasslands: Analytical Studies, Parte1 R. W. Snaydon,Alicja I. Breymeyer Vista de fragmentos - 1987 |
Managed Grasslands: Analytical Studies, Parte1 R. W. Snaydon,Alicja I. Breymeyer Vista de fragmentos - 1987 |
Términos y frases comunes
above-ground agricultural Agrostis animals annual arable areas beef below-ground biomass Calluna capybara cattle chernozem climate cows crops cultivars cultivation dairy decomposition decrease density dominant drainage Editor estero farms fertilizer Festuca flooding forage forest grass grassland ecosystems grazing green growth ha¯¹ ha¹ heterotrophic humid humus Hymenachne increase input intensive irrigation kg ha-1 land layer legumes litter livestock Lolium perenne mainly Massif Central meadows mineral Miscanthus sinensis módulo moisture moorsh mountains Nardus natural nitrogen nutrients organic matter pastures peat peat soils peatlands period phytomass phytophages plant Poa pratensis prairie precipitation primary production proportion rainfall regions roots rubra ryegrass savanna season sheep silage slopes sown Spain species Sports Turf steppe stocking rate summer swards Table temperature thatch tion Trifolium repens Turfgrass valleys vegetation winter yield yr¹ zone