Effects of oil pollution on soil microbial diversity in the Loess hilly areas, China

Abstract Purpose Data support and theoretical basis for bioremediation treatment of petroleum-contaminated soils in the Loess hills Yan’an, northern Shaanxi. Methods The evolutionary characteristics soil microbial diversity community structure under different levels oil pollution were studied by field sampling, indoor simulation experiments, analyzed through assays, using mine from Shaanxi Province, as research object. Results Compared with clean soil, species contaminated significantly reduced, dominant flora changed, capable degrading petroleum pollutants increased significantly. differed, although not significantly, between levels, but soil. In uncontaminated (CK), genera mainly Pantoea , Sphingomonas Thiothrix Nocardioides . abundance Pseudomonas Pedobacter Massilia Acinetobacter after contamination, while Gemmatimonas decreased Conclusions After was petroleum, relative bacteria groups increased. that can degrade study area include which provide a scientific exploring It provides remediation methods suitable this region.