Forestry works using chainsaws result in up to 7 million liters of various mineral oils being soaked annually into forest soils. These substances, containing a complex mixture of polycyclic aromatic hydrocarbons (PAHs), are highly toxic. The aim of the study was to determine the effect of oil contamination with PAHs on the physical and biological properties of forest soils. The study area was located in southern Poland in the Miechów forest district. The experiment was conducted on four treatment blocks with various amounts of oil addition. The study included the determination of PAH content, dehydrogenase and urease activity, and biomass of earthworms. Physical properties were determined using the dryer method and Kopecky rings of 250 cm3 volume. The results obtained confirmed the hypothesis that oil contamination with PAHs modified the physical properties of forest soils and oil had a negative impact on enzyme activity in soil. Enzyme activity in the studied soils was negatively correlated with PAH content. Earthworm population density reflected the contamination level of oil-contaminated soils.
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机译：每年使用链锯进行的林业工作导致多达700万升的各种矿物油被吸收到森林土壤中。这些物质包含多环芳香烃（PAH）的复杂混合物，具有剧毒。该研究的目的是确定多环芳烃对石油的污染对森林土壤物理和生物学特性的影响。研究区域位于波兰南部Miechów森林区。该实验是在四个处理块中进行的，其中添加了不同量的油。该研究包括测定PA中的PAH含量，脱氢酶和脲酶活性以及worm的生物量。使用干燥器方法和250 cm 3 体积的Kopecky环测定物理性质。获得的结果证实了以下假设：油中多环芳烃的污染会改变森林土壤的物理性质，而油对土壤中酶的活性会产生负面影响。研究土壤中的酶活性与PAH含量呈负相关。 population的种群密度反映了被油污染的土壤的污染程度。
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