Bacterial Structure and Diversity of Rhizosphere Soil of Four Tree Species in Yellow River Delta Based on High-Throughput Sequencing

【Objective】The aim of the present study was to investigate the bacterial structure and diversity of rhizosphere soil of different plantations and their influencing factors in Yellow River Delta. 【Method】Based on the high throughput sequencing technology,this research compared the rhizosphere soil bacterial community structure and diversity of Ailanthus altissima,Ulmus pumila,Fraxinus velutina,Robinia pseudoacacia,and analysed correlation with soil properties.【Result】The results of high throughput sequencing showed that there were 27,26,28,and 28 phylum bacteria in the rhizospheresoil of A. altissima,U. pumila,F. velutina,and R. pseudoacacia. Acidobacteria,Proteobacteria,and Actinobacteria were dominant bacteria taxa with their relative abundance more than 10%,and Nitrospirae,Chloroflexi,Planctomycetes,Gemmatimonadetes,and Verrucomicrobia were main bacteria taxa with their relative abundance more than 1%. There was significant difference in the relative abundance of Proteobacteria,WS3,Cyanobacteria,Euryarchaeo