Comparative Efficiency in Nutrient Retention between the Vegetation of the Natural Ecosystems and of the Agro-Systems
Iuliana Florentina Gheorghe

Iuliana Florentina Gheorghe, Department of Ecological, University of Bucharest, Natural Science and Ecology, Bd. Vasile Milea G, Bucharest Romania.
Manuscript received on 6 April 2014 | Revised Manuscript received on 17 April 2014 | Manuscript Published on 30 April 2014 | PP: 98-103 | Volume-3 Issue-11, April 2014 | Retrieval Number: K16160431114/14©BEIESP
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Abstract: Over the last 50 years, the Europe’s agricultural sector was supported by the commune agrarian policy (CAP). Although in the beginning the emphasis was on expanding farmland at the expense of the natural ecosystems and on an intensive agriculture in the existing farmland, in the last decades was understood also the need of nature conservation in parallel with the development of agriculture. This support has evolved alongside growing recognition and awareness of the strong links between agricultural production and biological diversity conservation. The Ecology development as science, mainly after the Odum approach, emphasized the role of natural ecosystems in natural capital conservation and biodiversity. Also the ecology studies conducted in the last two decades, have revealed and other services provided by the natural ecosystems besides the generated resources, that fixation carbon dioxide, the reduce diffuse pollution with nutrients, creation a local microclimate, etc The local microclimate created by natural vegetation areas near of the crops influences strongly the ecological functions of anthropogenic ecosystems , even the in the semi-natural ecosystems, important functions as cycles of nutrient and water (local water balance, nutrient balance and the production of biomass). The keeping of a mosaic structure (a mixed of crops with pasture, forests, rivers and lakes) is an ideal solution to harmonize the development of society which involves an increase of needs in energy and materials resources; with nature conservation.
Keywords: Plant Communities, Primary Production, Litter Decomposition, Water Balance, Nutrients Balance

Scope of the Article: Natural Language Processing