Abstract The impacts of long-term polycyclic aromatic hydrocarbons (PAHs) and heavy metal pollution on soil microbial communities functioning were studied in soils taken from an old coke plant. The concentrations of PAHs in the tested soils ranged from 171 to 2137 mg kg-1. From the group of tested heavy metals, concentrations of lead were found to be the highest, ranging from 57 to 3478 mg kg-1, while zinc concentrations varied from 247 to 704 mg kg-1 and nickel from 10 to 666 mg kg-1. High dehydrogenase, acid and alkaline phosphatase activities were observed in the most contaminated soil. This may indicate bacterial adaptation to long-term heavy metal and hydrocarbon contamination. However, the Community Level Physiological Profiles (CLPPs) analysis showed that the microbial functional diversity was reduced and influenced to a higher extent by some metals (Pb, Ni), moisture and conductivity than by PAHs.

中文翻译：

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长期碳氢化合物和重金属污染土壤中微生物群落的活性和功能多样性

摘要 在取自老焦炭厂的土壤中研究了长期多环芳烃 (PAHs) 和重金属污染对土壤微生物群落功能的影响。测试土壤中多环芳烃的浓度范围为 171 至 2137 mg kg-1。从测试的重金属组中，发现铅的浓度最高，范围从 57 到 3478 mg kg-1，而锌浓度从 247 到 704 mg kg-1 不等，镍浓度从 10 到 666 mg kg-1 . 在污染最严重的土壤中观察到高脱氢酶、酸性和碱性磷酸酶活性。这可能表明细菌对长期重金属和碳氢化合物污染的适应。然而，