The Nitrogen Regime in Arable Soils under the Influence of Tailings from Mining Landfills in the Urban Perimetre of Baia Mare

摘要

Crossing in private property of the lands has allowed the development of subsistence agriculture in the most unusual areas. In this situation are some lands located the near of old tailings from the perimetre of Baia Mare city. In this study we performed the agrochemical evaluation (some macro and micronutrients) of two soils located upstream and downstream of the triad of the tailings ponds: Sasar, Aurul and Remin. These areas are experimental plots in a study concerning on evaluation of the nitrogen regim under the influence of mining tailings deposited in these dumps. Determined values were compared with expected values in MESP-1987 and under the Order no. 756/1997 for the soils with sensitive use. The study revealed that the nitrogen regime is strongly affected by accumulation of the some potentially toxic elements, from the tailings stored for decades in these locations.