Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil

摘要: Despite the known influence of nitrogen fertilization and groundwater conditions on soil microbial communities, effects their interactions bacterial composition denitrifier communities have been rarely quantified. Therefore, a large lysimeter experiment was conducted to examine how what extent table changes reduced application would nirK-type nirS-type genes. The genes were compared at two levels N input three levels. Our results demonstrated that depression table, lead drastic shifts in Structural equation models (SEMs) indicated not only directly altered species but also indirectly influenced them through regulating nutrient salinity. Furthermore, variation NO3−–N electrical conductivity caused by played most important role altering community communities. Together, our findings provide first-hand evidence jointly regulate agricultural soil. We highlight local environmental such as attributes should be taken into account enrich knowledge impact or even biogeochemical cycles.