生物降解片通过重塑微生物群落和功能基因来不同调节土壤碳循环
Haiyun Zhang1, Shutong Yu2, Weiguang Lv1
1Institute of Eco-Environmental Protection, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; Shanghai Agri-Environmental and Cultivated Land Conservation of Scientific Observation and Experiment Station, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China; Key Laboratory of Low-carbon Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China.
Journal of hazardous materials
|March 7, 2026
概括
可生物降解的皮膜提高了土壤碳循环中的微生物多样性,并改变了功能基因,其影响因膜成分而异. 这些变化影响了土壤碳循环过程.
科学领域:
- 农业科学 农业科学
- 环境微生物学 环境微生物学
- 土壤科学 土壤科学
背景情况:
- 护是一种常见的农业实践,用于管理土壤环境.
- 了解可生物降解片对土壤微生物群落和功能的影响,对于可持续农业至关重要.
研究的目的:
- 研究两种可生物降解的覆盖膜 (BM1,BM2) 和一种塑料覆盖膜 (PM) 对土壤碳 (C) 循环微生物和功能基因的影响.
- 为了确定不同的可生物降解料成分如何影响土壤C循环过程和微生物相互作用.
主要方法:
- 实地实验使用两种可生物降解的覆盖膜 (BM1:PBAT/PLA,BM2:PBAT/) 和一种塑料覆盖膜 (PM) 进行.
- 分析了土壤样本的C周期微生物社区结构 (α多样性,丰富性) 和功能性基因表达.
- 使用并发网络分析来评估微生物相互作用.
- 测量了主要的土壤物理化学特性 (pH,EC,AP,SOC).
主要成果:
- 可生物降解的覆盖膜在一个月后显著增强了微生物α多样性和丰富性,尽管效果减少了七个月.
- BM1抑制了碳固化基因,但提高了碳降解基因 (例如,pectin降解) 和抑制了甲代谢基因.
- 与BM1相比,BM2的效果较弱.
- 覆盖减少了微生物多样性和相互作用的复杂性,但加强了协同关系,BM1显著增加了积极的相互作用.
- 土壤pH,EC,AP和SOC被确定为影响微生物群体的关键因素.
结论:
- 可生物降解的覆盖膜,特别是BM1,显著改变土壤C循环微生物群落和功能性基因表达.
- 这些膜改变了土壤的微环境,影响了土壤碳转化过程.
- 生物降解片的组成决定了它们对土壤微生物生态和功能的具体影响.
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