title: The Resistance Evaluation of Dry Subtropics Brown Soils to Heavy Metal and Oil Contamination by Biological Indicators
abstract: Contamination of brown calcareous soils with Cr, Cu, Ni, Pb and oil leads to deterioration of their biological properties. There is a reduction in activity of catalase and dehydrogenase, an abundance of &lt;i&gt;Azotobacter&lt;/i&gt; genus bacteria, cellulolytic activity and the length of radish roots. As a rule, there is a direct relationship between the content of contaminant in the soil and degree of deterioration of biological properties of the soil. According to the degree of negative impac
journal: American Journal of Agricultural and Biological Sciences