Soil Microbial Community Composition and Diversity Are Insusceptible to Nitrogen Addition in a Semi-Arid Grassland in Northwestern China

• DOI: 10.3390/agronomy13102593
• Publication Date: 2023-10-11T06:11:01Z
• Authors: Hanghang Tuo; Meihui Li; Hossein Ghanizadeh; Jiandi Huang; Mengru Yang; Zilin Wang; Yibo Wang; Huihui Tian; Faming Ye; Wei Li
• Keywords: Deposition

Human-caused nitrogen (N) deposition is a global environmental issue that can change community composition, functions, and ecosystem services. N affects plants, soil, microorganisms regionally linked to ecosystem, climate factors. We examined the effects of six addition levels (0, 2.34 g, 4.67, 9.34,18.68, 37.35 g m−2 yr−1) on aboveground vegetation, surface soil properties, microbial community. Alterations in communities response were monitored using 16S rRNA (16S ribosomal ribonucleic acid, where S donates sedimentation coefficient) ITS (internal transcribed spacer) regions for bacterial fungal communities, respectively. positively affected vegetation traits, such as biomass weighted mean leaf nitrogen. also limited phosphorus (P) availability altered assembly process from random processes deterministic processes. The diversity however, not sensitive addition. Partial least squares structural equation models showed composition was mainly driven by plant total nitrogen, while pH Taken together, results this research improved our understanding grassland ecosystems provided theoretical basis utilization management under deposition.