石油污染对黄土丘陵区土壤微生物多样性的影响

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Shi, Lei, Liu, Zhongzheng, Yang, Liangyan, Fan, Wangtao
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引用次数: 4

摘要

陕北延安黄土丘陵区石油污染土壤生物修复与治理的数据支持与理论基础以陕西延安矿区土壤为研究对象,通过现场采样、室内模拟实验和分析分析,研究了不同程度石油污染下土壤微生物多样性和群落结构的演化特征。与清洁土壤相比,污染土壤中微生物种类明显减少,优势菌群发生变化,能够降解石油污染物的菌群显著增加。土壤微生物多样性和群落结构在不同污染水平之间差异不显著,但在清洁土壤中差异显著。在未污染土壤(CK)中,优势微生物属主要为泛菌属、鞘单胞菌属、硫垂菌属和Nocardioides。油污染后土壤中假单胞菌、土杆菌、Massilia、Nocardioides和Acinetobacter的丰度增加,而硫垂菌、鞘单胞菌和双胞菌的丰度显著降低。土壤被石油污染后,土壤微生物种类明显减少,土壤优势属发生变化,能够降解石油污染物的细菌类群相对丰度增加。研究区石油污染土壤中可降解石油污染物的属主要有Pseudomonas、Acinetobacter、Pedobacter、Acinetobacter、Nocardioides等,为探索提供了科学依据,为探索适合本地区石油污染土壤的修复方法提供了科学依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of oil pollution on soil microbial diversity in the Loess hilly areas, China
Data support and theoretical basis for bioremediation and treatment of petroleum-contaminated soils in the Loess hills of Yan’an, northern Shaanxi. The evolutionary characteristics of soil microbial diversity and community structure under different levels of oil pollution were studied by field sampling, indoor simulation experiments, and analyzed through assays, using the mine soils from Yan’an, Shaanxi Province, as the research object. Compared with clean soil, the microbial species in contaminated soil were significantly reduced, the dominant flora changed, and the flora capable of degrading petroleum pollutants increased significantly. The soil microbial diversity and community structure differed, although not significantly, between different pollution levels, but significantly from clean soil. In the uncontaminated soil (CK), the dominant soil microbial genera were mainly Pantoea, Sphingomonas, Thiothrix, and Nocardioides. The abundance of Pseudomonas, Pedobacter, Massilia, Nocardioides, and Acinetobacter in the soil increased after oil contamination, while Thiothrix, Sphingomonas, and Gemmatimonas decreased significantly. After the soil was contaminated with petroleum, the microbial species in the soil decreased significantly, the dominant genera in the soil changed, and the relative abundance of bacteria groups capable of degrading petroleum pollutants increased. The genera that can degrade petroleum pollutants in the petroleum-contaminated soil in the study area mainly include Pseudomonas, Acinetobacter, Pedobacter, Acinetobacter, and Nocardioides, which provide a scientific basis for exploring It provides a scientific basis for exploring remediation methods suitable for petroleum-contaminated soil in this region.
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
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