Land cover types and depth regulate carbon and nitrogen cycle functional genes in permafrost regions on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Fan, Xiaoying; Wu, Xiaodong; Ma, Dejincuo; Wu, Tonghua; Liu, Guimin; Xu, Haiyan; Zou, Defu; Hu, Guojie; Liu, Yadong; Wei, Xianhua |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2025 |
| 卷号 | 514期号:1页码:1507 |
| 关键词 | Microbial community Metagenomics Carbon cycle Nitrogen cycle Functional genes |
| 英文摘要 | Background and AimsMicroorganisms are essential for carbon and nitrogen cycling in the active layer of permafrost regions, but the distribution and controlling factors of microbial functional genes across different land cover types and soil depths remain poorly understood. This gap hinders accurate predictions of carbon and nitrogen cycling dynamics under climate change. This study aims to explore how land cover type and soil depth influence microbial functional gene distribution in the Qinghai-Tibet Plateau's permafrost regions.MethodsSoil samples (0-50 cm) were collected from alpine wet meadows, alpine meadows, and alpine steppes. We analyzed the samples for physicochemical properties, microbial amplicon sequencing, and metagenomic sequencing. Correlation analyses were conducted between microbial community structure, functional genes, and environmental factors to identify the drivers of microbial carbon and nitrogen cycling.ResultsBacterial richness was 6.03% lower in steppe soils compared to wet meadow soils. Steppe soils exhibited the highest aerobic respiration potential, while deeper wet meadow soils had enhanced anaerobic carbon fixation potential and a higher abundance of carbon decomposition-related genes. Nitrogen assimilation was highest in steppe surface soils, whereas denitrification and ammonification were greatest in wet meadow soils. Carbon cycling potential was influenced by total soil carbon, nitrogen, phosphorus, and belowground biomass, while nitrogen cycling was driven by belowground biomass, soil moisture, and pH.ConclusionOur findings underscore the role of environmental factors in microbial functional gene distribution, providing new insights for modeling carbon and nitrogen cycling in alpine permafrost ecosystems under climate change. |
| 源URL | [http://210.75.249.4/handle/363003/62466]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Fan, Xiaoying,Wu, Xiaodong,Ma, Dejincuo,et al. Land cover types and depth regulate carbon and nitrogen cycle functional genes in permafrost regions on the Qinghai-Tibet Plateau[J]. PLANT AND SOIL,2025,514(1):1507. |
| APA | Fan, Xiaoying.,Wu, Xiaodong.,Ma, Dejincuo.,Wu, Tonghua.,Liu, Guimin.,...&Abakumov, Evgeny.(2025).Land cover types and depth regulate carbon and nitrogen cycle functional genes in permafrost regions on the Qinghai-Tibet Plateau.PLANT AND SOIL,514(1),1507. |
| MLA | Fan, Xiaoying,et al."Land cover types and depth regulate carbon and nitrogen cycle functional genes in permafrost regions on the Qinghai-Tibet Plateau".PLANT AND SOIL 514.1(2025):1507. |
入库方式： OAI收割
来源：西北高原生物研究所
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