Relative abundance of rhizospheric bacteria in Spartina alterniflora Loisel and its response on environmental factors

In order to understand the distribution of rhizosphere bacterial in Spartina alterniflora Loisel, we investigated the relationship with rhizosphere bacteria and environmental factors in reclamation area and non-reclamation area. The embankment could influence the distribution of bacterial relative abundance in different seasons greatly. The bacterial relative abundance in the reclamation area was obviously lower than that in the non-reclamation area. And in the reclamation area, the maximum bacterial relative abundance existed in the area near the sea. Furthermore, the bacterial relative abundance decreased with the increase of the soil depth. The rhizosphere bacterial relative abundance was positively associated with the content of total nitrogen and organic matter (p<0.05), and negatively associated with the salt concentration (p<0.05), and had no significant correlation with the total phosphorus content. The study has important scientific significance and application value for typical vegetation in the Yellow River Delta, especially invasive species, and provides targeted measures and decision-making basis for the control of Spartina alterniflora in coastal area of China.