Correlation Analysis between Occurrence of Polycyclic Aromatic Hydrocarbons and Microbial Community Structure in Soil of the Yellow River Delta Nature Reserve
To investigate the occurrence of polycyclic aromatic hydrocarbons(PAHs)in soil and their correlation with microbial community structure in the Yellow River Delta nature reserve,the grid sampling method was used to select 60 surface soil samples from the nature reserve for PAHs determination.Six different areas were selected based on the functional zoning of the nature reserve to determine soil microorganisms.Cor-relation analysis and Monte Carlo permutation were used to test the relationship between PAHs and microbial communities.The results showed that in the Yellow River Delta nature reserve,the soil PAHs content in the northwest was higher than that in the southeast.Soil PAHs had a greater impact on microbial populations and were highly significantly positively correlated with most bacteria and archaea at phylum level.Among them,highly significantly positively relationships were found between dibenzo[a,n]anthracene(DBA)and Bacte-roidetes,pyrene(Pyr)and Proteobacteria,benzo[k]fluoranthene(BkF)and Firmicutes,benzo[g,h,I]pyrene(BgP)and Bathyarchaeota,benzo[b]fluoranthene(BbF)and Thaumarchaeota,and DBA and Eur-yarchaeota with correlation coefficients of 0.846,0.912,0.710,0.731,0.649 and 0.596,respectively.DBA,Pyr and Phe had larger impacts on bacteria,while Phe,Pyr and Ace had larger impacts on archaea.Thus,under PAHs stress,the abundance of bacteria and archaea increased to varying degrees,showing a certain po-tential for PAH degradation.
Yellow River DeltaPolycyclic aromatic hydrocarbonsMicrobial community structureCor-relation analysisMonte Carlo permutation test
万方数据
维普
