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Updated: Feb 24, 2026

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
Published on: January 7, 2019
Distribution of N2O-reducing bacteria in Zoige plateau peatlands driven by nitrate nitrogen and pH
Zhifang Zhang1, Ruixuan Li2, Weijia Liu3
1College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China.
Abstract:
Nitrous oxide (N2O) is the third most important greenhouse gas. Bacteria harboring the nosZⅠ and nosZⅡ genes constitute the only known biological reduction way of N2O, yet their distribution patterns and drivers in peatland ecosystems remain poorly understood. To address this, this study investigated the abundance, diversity, and community composition of N2O-reducing bacteria in Zoige plateau peatland across seasons, soil depths and types using quantitative PCR and high-throughput sequencing. In general, nosZ abundance decreased with soil depths and shifted dominance between seasons: nosZⅠ was predominant during the growing season, whereas nosZⅡ was predominant during the non-growing season. By comparison, the nosZ clade Ⅱ community showed greater diversity than nosZ clade Ⅰ. Futheremore, the Redundancy, Random Forest, Network analysis revealed that nitrate nitrogen (NO3--N) content and pH were the key factors affecting nosZ gene abundance and community structure, respectively. This study revealed the spatiotemporal patterns and ecological drivers of nosZ clades in plateau peatland, providing theoretical insights for N2O mitigation.
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