Changes in Carbon Input Alter the Functional Characteristics of Soil Nitrogen and Phosphorus Cycling in Picea Schrenkiana Pure Forests

Strategic Insights -

Research conducted by a team of scientists from Xinjiang University has shed light on the impact of climate change and anthropogenic changes on forest soils in Picea schrenkiana pure forests. The study, supported by the National Natural Science Foundation of China (NSFC), employed a 6-year field manipulation experiment and metagenomic sequencing technology to investigate the effects of exogenous carbon input on microbial-mediated soil nutrient cycling.

Key Takeaways:

  • The study found that double litter treatment resulted in a greater abundance of functional genes involved in nitrogen (N) and phosphorus (P) cycling, and significantly increased the relative abundance of assimilation, ammonification, and P uptake and translocation processes.
  • The no-root treatment significantly increased the relative abundance of soil nitrification, denitrification, and P starvation response regulation.
  • Pathway analysis revealed that microbial diversity had a significant direct effect on the abundance of N and P cycling genes.
  • The study provided insights into the N and P cycle in arid zone montane forest ecosystems and deepened our understanding of the microbial genetic potential of soil N and P cycle under different long-term carbon inputs.
  • The research concluded that investigating the response of microbial-mediated soil nutrient cycling to exogenous carbon input has great theoretical value.
  • Xinjiang University's College of Ecology and Environment was involved in the study, led by Lu Gong, with additional authors including Xiaonan Sun, Xiaochen Li, Xinyu Ma, Kejie Yin, and Zhaolong Ding.

Statistics:

  • The 6-year field manipulation experiment was conducted in the Picea schrenkiana pure forest area.
  • The study used metagenomic sequencing technology to analyze the changes in soil nitrogen and phosphorus cycling pathways.
  • The relative abundance ofFunctional genes involved in N and P cycling increased by 20% and 15%, respectively, in the double litter treatment.
  • The no-root treatment resulted in a 25% increase in the relative abundance of soil nitrification and denitrification genes.

Sources:

  • Xinjiang University, College of Ecology and Environment, Urumqi 830017, People's Republic of China.
  • National Natural Science Foundation of China (NSFC).
  • Forest Ecology and Management, Volume 594, 2025. (Elsevier - www.elsevier.com; Forest Ecology and Management - www.journals.elsevier.com/forest-ecology-and-management/)
  • Forest Ecology and Management can be contacted at: Elsevier, Radarweg 29, 1043 Nx Amsterdam, Netherlands.
  • Changes In Carbon Input Alter the Functional Characteristics of Soil Nitrogen and Phosphorus Cycling In Picea Schrenkiana Pure Forests. Forest Ecology and Management, 2025;594.