Distribution characteristics of nitrogen and the related microbial community in the surface sediments of the Songhua River.

ABSTRACT: Nitrogen in surface sediments is becoming an ecological risk to the river environment and it is essential to clarify the relationship between the different forms of nitrogen and related microorganisms. A survey was conducted to analyze the distribution characteristics of the nitrogen and related microbial community in the sediments of the Songhua River during normal season and dry season. In the surface sediments of the Songhua River, no total nitrogen (TN) pollution risk was observed according to the U.S. EPA assessment criteria (1000 mg kg^-1) for sediment contamination, but TN in several sampling sites (554.9-759.7 mg kg^-1) exceeded the alert values (550 mg kg^-1) should be concerned according to the guidelines issued by the Ministry of Environment and Ene

SUBMITTER: Li C 

PROVIDER: S-EPMC9037357 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature