Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China.

ABSTRACT: Increased nitrogen (N) input from natural factors and human activities may negatively impact the health of marsh wetlands. However, the understanding of how exogenous N affects the ecosystem remains limited. We selected the soil bacterial community as the index of ecosystem health and performed a long-term N input experiment, including four N levels of 0, 6, 12, and 24 gN·m^-2·a^-1 (denoted as CK, C1, C2, and C3, respectively). The results showed that a high-level N (24 gN·m^-2·a^-1) input could significantly reduce the Chao index and ACE index for the bacterial community and inhibit some dominant microorganisms. The RDA results indicated that TN and NH₄⁺ were the critical factors influencing the soil microbial community under t

SUBMITTER: Chen Z 

PROVIDER: S-EPMC10300847 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature