Soil Pollution

2438 WordsDec 13, 200910 Pages
SOIL POLLUTION INTRODUCTION Soil is the thin layer of organic and inorganic materials that covers the Earth's rocky surface. The organic portion, which is derived from the decayed remains of plants and animals, is concentrated in the dark uppermost topsoil. The inorganic portion made up of rock fragments, was formed over thousands of years by physical and chemical weathering of bedrock. Productive soils are necessary for agriculture to supply the world with sufficient food. A soil pollutant is any factor which deteriorates the quality, texture and mineral content of the soil or which disturbs the biological balance of the organisms in the soil. Pollution in soil has adverse effect on…show more content…
Ground-waters pollution is particularly dangerous for the water we drink, coming from wells and natural sources of the areas where pesticides are used, given that pesticides, after reaching the deep layers of the soil and the ground-waters, are protected from the oxidation by the air and are more persistent. To give an example, in Italy one of the most developed farming Countries of Europe, the herbicides pollution in the soil has reached worrying levels: from a monitoring campaign about pesticides made by the APAT public authority in the period 2003-2005, there were 119 different pesticides detected as pollutants; 112 of them were found in superficial waters and 48 in ground-waters. The pesticides residues were found, only in 2005, in 485 monitoring sites (47% of the total sites) and the levels of pesticides were above the limits for drinking water in 27.9% of sites, About underground waters, 630 monitoring sites were contaminated and were 24.8% of the total, with 7.7% of cases above the limits for drinking water.In addition, intensive farming tends to deplete the soil of its mineral content and against this, it uses artificial fertilizers containing phosphorus and nitrogen.Also this is pollution because the soil is exploited too much and changes its features.To remedy against a situation like this, the only solution is a definitive and massive conversion of all cultures to organic farming. This is not a
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