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Fungal diversity and its mechanism of community shaping in the milieu of sanitary landfill

Frontiers of Environmental Science & Engineering 2021年第4期15卷 325-335页

作者： Rong Ye Sai Xu Qian Wang Xindi Fu Huixiang Dai Wenjing Lu School of Environment Tsinghua UniversityBeijing 100084China Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China CHN Energy Technology&Environment Group Co. Ltd.Beijing 100039China

Land filling is the main method to dispose municipal solid waste in *** the decomposition of organic waste in landfills,fungi play an important role in organic carbon degradation and nitrogen ***,fungal composition and potential functions in landfill have not yet been *** this study,refuse and leachate samples with different areas and depths were taken from a large sanitary landfill in Beijing to identify fungal communities in *** high-throughput sequencing of ITS region,474 operational taxonomic units(OTUs)were obtained from landfill samples with a cutoff level of 3%and a sequencing depth of *** results indicates that Ascomycota,with the average relative abundance of 84.9%,was the predominant phylum in landfill fungal *** the genus level,Family Hypocreaceae unclassified(15.7%),Fusarium(9.9%)and Aspergillus(8.3%)were the most abundant fungi found in the landfill and most of them are of saprotrophic lifestyle,which plays a big role in nutrient cycling in *** existed both in landfilled refuse and leachate while both the richness and evenness of fungal communities were higher in the *** addition,fungal communities in landfilled refuse presented geographic variances,which could be partly attributed to physical habitat properties(pH,dissolved organic carbon,volatile solid,NH_(4)^(+),NO_(2)^(−)and NO_(3)^(−)),while NO_(3)^(−)was considered the most significant factor(p<0.05)in shaping fungal community.

关键词： Sanitary landfill Fungal community Diversity saprotroph Physical habitat Environmental factor

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