By Cesare Dosi (auth.), Cesare Dosi (eds.)

ISBN-10: 9048156505

ISBN-13: 9789048156504

ISBN-10: 9401597812

ISBN-13: 9789401597814

Groundwater is endangered and polluted in different methods. Conservation and higher administration of this invisible source may be a key factor of sustainable water rules. this can be very true in components, akin to many Mediterranean areas, that are already uncovered to shortage difficulties and that are prone to adventure expanding pageant among freshwater makes use of and clients. Agriculture is a vital person of groundwater not just when it comes to abstractions, but in addition by way of new release and free up of pollution. Agricultural rules, routinely directed in the direction of different pursuits, are starting to pay extra realization to environmental issues. besides the fact that more suitable tasks are required to minimize the strain upon groundwater assets and to accomplish a greater integration among agricultural and environmental guidelines.
This e-book has been built from 3 workshops held as a part of the ecu Concerted motion SAGA, "Sustainable Agricultural Use of Aquifers in Southern Europe: Integration among Agricultural and Water administration rules" (FAIR5-CT97-3673). The Concerted motion and the workshops introduced jointly researchers operating in numerous yet complementary fields, that allows you to get an image of the state-of-the paintings approximately interlinkages among agriculture and groundwater, in addition a severe assessment of different regulatory ways and coverage tools aimed toward enhancing groundwater management.

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Additional resources for Agricultural Use of Groundwater: Towards Integration Between Agricultural Policy and Water Resources Management

Example text

E. a portion of land cultivated in the same way and homogeneous from the environmental viewpoint, characterized in particular by the same soil and climate. The time scale of the phenomena is widely variable: some occur as practically instantaneous impulses, such as the atmospheric drift of pesticides at time of application, others instead have much longer dynamics that may even last for years, such as nu trient releases in water following phenomena of mineralization and leaching in soils. 2. Transport The transport phase of the diffuse loads is when a pollutant of agricultural origin moves across the environment; for example, when a certain amount of pesticide lost from a cultivated field percolates below the root layer through the unsaturated layer, before it reaches the groundwater.

Especially in relatively dry areas such as southern Europe and the Mediterranean, many authors treat these phenomena within the broader concept of desertification. Desertification can, in fact, be considered as a complex phenomenon determining reductions of biological and economic productivity and increased pollution (Perez-Trejo, 1992). In this regard water is obviously a crucial natural resource, and the Mediterranean is one of the areas where such conflicts are particularly feit. ), biotic (vegetation and fauna), and merobiotic (soil) factors.

With regard to subsurface contaminants from agricultural practices, saltwater is most appropriately addressed from an aquifer perspective since it most commonly arises from excessive pumping of groundwater, nutrients from a Agricultural Impacts on Groundwater 41 watershed focus because of their close interactions with plants and the vadose zone and their important impacts on local streams and lakes, and pesticides on a case-by-case basis given the complexity of these substances (they can variously be adsorbed onto soil grains, biodegraded in the shallow subsurface, or percolate into deep confined aquifers).

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Agricultural Use of Groundwater: Towards Integration Between Agricultural Policy and Water Resources Management by Cesare Dosi (auth.), Cesare Dosi (eds.)

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