Bacteria Community Vertical Distribution and Its Response Characteristics to Waste Degradation Degree in a Closed Landfill

The diversity, community structure and vertical distribution characteristics of bacteria in the surface subsurface soil water samples a closed landfill Shanghai Jiading District were investigated to reveal relationships between natural waste degradation degree succession bacterial composition. High-throughput sequencing 16S rDNA genes was used analyze diversity. results showed that diversity higher than deep samples. Proteobacteria dominant phylum all samples, percentage increased with depth. At genus level, Thiobacillus, Pseudomonas, Aquabacterium, Hydrogenophaga genera surface, medium, ultra-deep soils, respectively. Bray–Curtis dissimilarity communities same layer small, indicating composition similar. RDA result ammonium, nitrate, pH C/N significantly influenced bacteria. This is great relevance understand effect on landfills.