Data di Pubblicazione:
2007
Abstract:
Large areas of the southern European countries possess a Mediterranean climate, which influences soil
properties, land use, fertilizer application practices and pathways of phosphorus (P) loss from agricultural
soils. On average, inputs of fertilizer P exceed P exports from the agricultural areas in these
countries; however, large differences in P surplus ⁄ deficit and soil P test values exist among regions.
Losses of P in drainage water are modest except in some irrigated areas and in those regions where
intensive animal production is concentrated. Losses of P in runoff water, whether as dissolved reactive
or particulate P, can be substantial as a result of the significance of erosive processes under the land
uses typical of the Mediterranean region, where extreme rainfall events contribute disproportionately
to such losses. Eutrophication due sensu lato to agricultural P sources affects a relatively high proportion
of rivers, lakes and reservoirs. The typical Mediterranean climate and patterns of land use result
in marked seasonality in the concentration of P in surface waters. Despite the growing number of
studies conducted, the contribution of agricultural P to eutrophication in southern European countries
remains largely unassessed and thus warrants pertinent research at the soil, field and catchment
scales.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Suolo; fosforo
Elenco autori:
J. TORRENT; E. BARBERIS; F. GIL-SOTRES
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