Alterations in the composition and metabolite profiles of the saline-alkali soil microbial community through biochar application

文献类型： 外文期刊

第一作者： Wang, Xiangling

作者： Wang, Xiangling;Babar, Saba;Eldesouki, Zeinab;Xia, Hao;Li, Yuxuan;Wang, Jiyuan;Xia, Xiaoyang;Jiang, Cuncang;Wang, Xiangling;Jiang, Cuncang;Riaz, Muhammad;Liu, Bo;Eldesouki, Zeinab

作者机构：

关键词： Biochar; Bacterial community; Cotton; Metabolic; Saline -alkali

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0301-4797

年卷期： 2024 年 352 卷

页码：

收录情况： SCI

摘要： Saline-alkali soil poses significant chanllenges to sustainable development of agriculture. Although biochar is commonly used as a soil organic amendment, its microbial remediation mechanism on saline-alkali soil requires further confirmation. To address this, we conducted a pot experiment using cotton seedlings to explore the potential remediation mechanism of rice straw biochar (BC) at three different levels on saline-alkaline soil. The results showed that adding of 2% biochar greatly improved the quality of saline-alkaline soil by reducing pH levels, electrical conductivity (EC), and water-soluble ions. Moreover, biochar increased the soil organic matter (SOM), nutrient availability and extracellular enzyme activity. Interestingly, it also reduced soil salinity and salt content in various cotton plant tissues. Additionally, biochar had a notable impact on the composition of the microbial community, causing changes in soil metabolic pathways. Notably, the addition of biochar promoted the growth and metabolism of dominant salt-tolerant bacteria, such as Proteobacteria, Bacteroidota, Acidobacteriota, and Actinobacteriota. By enhancing the positive correlation between microorganisms and metabolites, biochar alleviated the inhibitory effect of salt ions on microorganisms. In conclusion, the incorporation of biochar significantly improves the soil microenvironment, reduces soil salinity, and shows promise in ameliorating saline-alkaline soil conditions.

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