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首页> 外文期刊>Eurasian Soil Science >Specific features of oil biodegradation in meadow-chestnut soils of the Stavropol region (model experiment).
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Specific features of oil biodegradation in meadow-chestnut soils of the Stavropol region (model experiment).

机译：Stavropol地区草甸-栗子土壤中石油生物降解的特定特征（模型实验）。

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摘要

Oil biodegradation in oil-contaminated meadow-chestnut soils under the impact of different biological preparations was studied in a model experiment. The soils differed from one another in the age of contamination and in the presence/absence of the stage of preliminary biological remediation. Background uncontaminated soils served as the control. To characterize oil degradation, the indices of basal respiration (BR) and dehydrogenase activity (DA) and data on oil concentrations in the soil were applied. It was shown that the most complete biodegradation of oil takes place in the soils with recent oil contamination in comparison with the soils contaminated with oil for 6.5 and 19.5 months. Maximum BR values were observed in the soils contaminated with oil for 19.5 months, whereas maximum DA values were observed in the soils contaminated with oil for 6.5 months. According to the multivariate analysis of variance, the major factors affecting the rate of oil biodegradation were the age of oil contamination, the biological preparation applied, and the presence (or absence) of the stage of preliminary biological remediation. These factors specified 18, 72, and 3% of the total variance of the residual oil content in the samples, respectively. The type of the applied biological preparations had the major effect on the BR and DA indices specifying 63 and 53% of their total variances, respectively. The results obtained in this study can be used as recommendations for remediation of oil-contaminated soils in the Stavropol region.Notes Translated from Pochvovedenie (2012) 3, 376-384 (Ru).
机译：在模型实验中研究了在不同生物制剂的影响下，石油污染的草甸栗木土壤中的生物降解。土壤的污染时代和是否有初步生物修复阶段都不同。背景未污染的土壤作为对照。为了表征油脂降解，应用了基础呼吸指数（BR）和脱氢酶活性（DA）以及土壤中油脂浓度的数据。结果表明，与最近被油污染6.5个月和19.5个月的土壤相比，最近被石油污染的土壤发生了最彻底的生物降解。在被油污染的土壤中观察到最大BR值为19.5个月，而在被油污染的土壤中观察到最大DA值为6.5个月。根据方差的多变量分析，影响石油生物降解速度的主要因素是石油污染的年龄，所采用的生物制剂以及初步生物修复阶段的存在（或不存在）。这些因素分别指定了样品中残余油含量的总方差的18％，72％和3％。所用生物制剂的类型对BR和DA指数有主要影响，分别指定了它们总变异的63％和53％。本研究获得的结果可作为修复斯塔夫罗波尔地区受油污染的土壤的建议。注释摘录自 Pochvovedenie （2012） 3 ，376-384（茹）。

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