The Resistance Evaluation of Dry Subtropics Brown Soils to Heavy Metal and Oil Contamination by Biological Indicators | Science Publications

American Journal of Agricultural and Biological Sciences

Kamil Shagidullovich Kazeev¹  Yuliya Viktorovna Akimenko¹  Sergey Ilyich Kolesnikov¹  Tatyana Mikhaelovna Minkina¹  Svetlana Nikolaevna Sushkova¹  Natalya Aleksandrovna Vernigorova¹  Natalya Aleksandrovna Petrova¹ 

关键词: North Caucasus;    Brown Soil;    Resistance;    Contamination;    Heavy Metals;    Oil;   

DOI  :  10.3844/ajabssp.2016.110.116

学科分类：农业科学（综合）

来源: Science Publications

【 摘 要 】

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 Azotobacter 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 impact on the biological properties of brown soil heavy metals form the following series: Cr > Cu > = Pb > = Ni. The pattern that chromium is more toxic and copper, lead and nickel have less and similar to each other degree of toxicity was established earlier in research conducted by the same method, with other soils in southern Russia. According to the degree of resistance brown soils are close to chestnut soils, they are less stable than chernozems and more stable than brown semi desert soils. Regional standards of Cr, Cu, Ni, Pb and oil content in brown soils of Ciscaucasia dry subtropics Ciscaucasia are proposed.

【 授权许可】

Unknown