Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau
文献类型：期刊论文
| 作者 | Pan, Sichen; Luo, Caiyun; Chen, Xin; Chen, Dongdong; Li, Qi; He, Fuquan; Zhang, Yukun; Zhang, Li; Zhao, Liang |
| 刊名 | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| 出版日期 | 2025 |
| 卷号 | 125 |
| 关键词 | Qinghai-Xizang plateau Alpine meadows Metagenomic Soil microbial communities Trace metals Carbon metabolism |
| 英文摘要 | Potentially toxic elements (PTEs) of soil are crucial for sustaining the equilibrium of grassland vegetation-soil-microorganism systems and influencing terrestrial biogeochemical cycles. This study investigated how PTEs influence microbial community structure and carbon metabolism by comparing soil microbial differences under fencing enclosure (FE), winter grazing (WG), and artificial unicast oat (AU) management practices. This was done in alpine meadows using metagenomic sequencing techniques. The results indicated that management measures significantly changed the distribution of the Cr, Hg, and As, with Cr and As being the highest in AU and Hg being the highest in FE. In the purine metabolic pathway, Hg had a significant positive effect on soil microbial biomass carbon (SMBC) metabolism, which was catabolized by the prokaryote Chloroflexi and the fungal organism Chytridiomycota during guanosine triphosphate (GTP) catabolism and xanthosine monophosphate (XMP) synthesis to promote soil SMBC cycling. Cr had a significant negative effect on soil organic carbon (SOC) and SMBC metabolism during the synthesis of xanthonsine, urate, 5-hydroxy-2-oxo-4-ureido-2,5-dihydro-1Himidazole-5-carboxylate and CO2. Additionally, the enrichment and decomposition of Cr by the prokaryotic organisms Proteobacteria and Verrucomicrobia, inhibited SMBC and SOC transformation and affected soil CO2 emissions. Further, by comparing resistance genes, it was found that alpine meadows were more resistant to Hg and Cr and that fungal organisms were more tolerant to Cr than prokaryotes. Overall, Cr and Hg interact with microorganisms to influence SOC and SMBC metabolic processes and have a positive effect on carbon sequestration in alpine meadows. |
| 源URL | [http://210.75.249.4/handle/363003/62472]  |
| 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 | Pan, Sichen,Luo, Caiyun,Chen, Xin,et al. Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2025,125. |
| APA | Pan, Sichen.,Luo, Caiyun.,Chen, Xin.,Chen, Dongdong.,Li, Qi.,...&Zhao, Liang.(2025).Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau.EUROPEAN JOURNAL OF SOIL BIOLOGY,125. |
| MLA | Pan, Sichen,et al."Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau".EUROPEAN JOURNAL OF SOIL BIOLOGY 125(2025). |
入库方式： OAI收割
来源：西北高原生物研究所
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