Impacts of rare earth mining on soil bacterial community composition and biodiversity
WANG You-sheng1,2, HOU Xiao-long1, CAI Li-ping1, MA Xiang-qing1
1. Forest College of Fujian Agriculture and Forestry University, Fuzhou 350002, China;
2. Longyan Forestry Science Institute of Fujian Province, Longyan 364000
Experiment was designed examine impacts of rare earth mining on soil ecosystem health in Changting. Soil samples were taken from depths of 0~20cm in pre-and post-mined areas (rented earth pits, heap-leaching mine area). Microbial DNA was extracted from soil samples and then 16S rDNA gene sequencing was carried out using Illumina MiSeq equipment. Examination of bacteria species present showed the microbial population was dominated by the level of phylum, class, order, families and genus and these were Firmicutes, Bacilli, Lactobacillales, Enterococcaceae, Enterococcus. The phylogenetic tree showed there were certain genetic relationships among Firmicutes, Proteobacteria, Actinobactera, Bacteroidetes, Verrucomicrobia, Acidobacteria, Nitrospirae, Cyanobacteria, Thermi. Alpha diversity index was calculated based on operational taxonomic units (OTUs). Results indicated that soil bacterial diversity and taxonomic composition distribution changed significantly in post-mining areas compared to control areas. However, the predominant bacteria in the soil communities did not change.
王友生, 侯晓龙, 蔡丽平, 马祥庆. 稀土开采对土壤细菌群落组成与多样性的影响[J]. 中国环境科学, 2017, 37(8): 3089-3095.
WANG You-sheng, HOU Xiao-long, CAI Li-ping, MA Xiang-qing. Impacts of rare earth mining on soil bacterial community composition and biodiversity. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(8): 3089-3095.
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