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Changes in the complex of heterotrophic microorganisms in the soddy-podzolic soil polluted by lead

机译:铅污染水土土壤中异养微生物复合体的变化

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摘要

Artificial pollution of soddy-podzolic by lead (>500 mg Pb/kg soil) caused a decrease in the species diversity of soil micromycetes and streptomycetes and in population density of azotobacter, a replacement of dominant species participating in decomposition of different substrates, and an increase in the abundance of phytotoxic micromycetes. The bacteria of genus Bacillus demonstrated high resistance to soil contamination by lead. High concentrations of lead were found in the topsoil layer even 15 years after the pollution.
机译:铅(> 500 mg Pb / kg土壤)对水田土壤的人为污染导致土壤微分枝杆菌和链霉菌的物种多样性降低,并降低了固氮菌的种群密度,取代了参与不同底物分解的优势物种,增加植物毒性微真菌。芽孢杆菌属细菌表现出对铅污染土壤的高抵抗力。污染后十五年,表土层仍发现高浓度的铅。

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