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A platform for research: civil engineering, architecture and urbanism
Forage production under suboptimal conditions: an overview of drougbt problems in Mediterranean-type ecosystems
11 páginas ; This paper reviews the current state of forage production studies in dry environments, with special attention to semi-arid (man-made oak savannas or "dehesas") and arid Mediterranean-type ecosystems in Spain. Forage production in dry environments is usually affected by non-c1imatic constraints and is linked to important characteristics of ecosystem functioning and management. Past studies are grouped into 1) classification of agrosystems, 2) water constraints and links between forage production and other ecosystem characteristics 3) soil constraints, and 4) implications for ecosystem management. Agrosystems have been c1assified on the basis of a number of variables such as f10ristic composition, vegetatíon physiognomy and production. Water supply in these habitats is conditioned by the high variabi litYof sea onal rainfall, topography, and the effect of tree shadows. Ir influences various ecological properties such as diversity and persistence. Soil constraints are related to nutrient content, nutrient uptake by plants and salinity. Management is aimed at optimizing the usually low productivity of these regions. The possibilities are planned extensive grazing, fertilization, introduction of species and ecotypes, planting forage shrubs, growing forage grain plants and alternating annual cycles of arable crops and pastures. The most promising studies of forage production in dry regions are related to the Sustainable Biosphere Initiative, and in turn biodiversity and sustainability. Techniques such as remote sensing are fostering these studie . ; Peer reviewed
Forage production under suboptimal conditions: an overview of drougbt problems in Mediterranean-type ecosystems
11 páginas ; This paper reviews the current state of forage production studies in dry environments, with special attention to semi-arid (man-made oak savannas or "dehesas") and arid Mediterranean-type ecosystems in Spain. Forage production in dry environments is usually affected by non-c1imatic constraints and is linked to important characteristics of ecosystem functioning and management. Past studies are grouped into 1) classification of agrosystems, 2) water constraints and links between forage production and other ecosystem characteristics 3) soil constraints, and 4) implications for ecosystem management. Agrosystems have been c1assified on the basis of a number of variables such as f10ristic composition, vegetatíon physiognomy and production. Water supply in these habitats is conditioned by the high variabi litYof sea onal rainfall, topography, and the effect of tree shadows. Ir influences various ecological properties such as diversity and persistence. Soil constraints are related to nutrient content, nutrient uptake by plants and salinity. Management is aimed at optimizing the usually low productivity of these regions. The possibilities are planned extensive grazing, fertilization, introduction of species and ecotypes, planting forage shrubs, growing forage grain plants and alternating annual cycles of arable crops and pastures. The most promising studies of forage production in dry regions are related to the Sustainable Biosphere Initiative, and in turn biodiversity and sustainability. Techniques such as remote sensing are fostering these studie . ; Peer reviewed
Forage production under suboptimal conditions: an overview of drougbt problems in Mediterranean-type ecosystems
Hernández, Ana Jesús (author) / Pastor Piñeiro, Jesús (author) / Rey Benayas, J.M. (author)
1994-01-01
Article (Journal)
Electronic Resource
English
DDC:
710
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