Publications by authors named "Huafang Sun"

This study aims to enlighten our understanding of the distribution of soil carbon-fixing bacteria (cbbL-harboring bacteria) and their community diversity in differently degraded patches at three altitudes. MiSeq high-throughput sequencing technology was used to analyze the soil carbon-fixing bacteria community diversity of degraded patches and healthy meadow at three altitudes. Redundancy analysis (RDA) and structural equation model (SEM) were used to analyze the correlation and influence path between environmental factors and carbon-fixing bacteria.

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This study proposed nitrogen addition experiments to analyze the effects of exogenous nitrogen addition on soil fungal diversity in alpine meadow. All the experiments were performed in degraded alpine meadow with two different slopes (gentle slope and steep slope) in Guoluo Prefecture of the Sanjiangyuan Region, and the sequence and analysis of ITS of soil fungi were performed using MiSeq PE250 sequencing technology. Comparative analysis was carried out with three nitrogen addition levels on soil fungal diversity in degraded grassland with different slopes, which included low nitrogen (LN, 2 g·m), middle nitrogen (MN, 5 g·m), and high nitrogen (HN, 10 g·m).

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Article Synopsis
  • - MiSeq sequencing was used to examine bacterial compositions in various types of alpine meadows, revealing that bacterial diversity changes with altitude and meadow degradation.
  • - Dominant bacteria identified were Proteobacteria, Actinobacteriota, and Acidobacteriota, with their abundances varying based on elevation and recovery of degraded patches.
  • - Environmental factors like soil crust coverage, nitrogen, and pH significantly affected bacterial diversity, showing that altitude plays a critical role in understanding these changes alongside degradation.
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MiSeq sequencing technology was used to analyze the microbial community diversity of soil in alpine wetlands to understand the degradation processes and environmental factors in these areas. The results showed that the severity of soil degradation changed the species diversity of soil microorganisms at the level of OTUs, and grass patches contained more species than frozen-thawing patches. The soil fungi species of OTUs changed significantly.

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