LUCIAN NITA, ADIA GROZAV, GHEORGHE ROGOBETE NATURAL AND ANTHROPIC SOIL ACIDIFICATION IN THE WEST OF ROMANIA
Acidification means the increase in soil acidity due to the natural soil – forming process, frequently in the warm and cool temperate zones, on a wide range of acid rocks consisting of Ã60% SiO2, primarily as silicate minerals. Typical acid rocks are granites, granodiorites and rhyolites. Subject to intense weathering processes, destruction of clays rich in aluminum occurs in these soils, giving acid conditions. Anthropic acidification consists in the increase in soil acidity due to the action of acid rains or to various farming techniques – application of acid – forming fertilizers.