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微生物群落在野地土壤多年生物降解塑料覆过程中的适应和选择以及对修复的影响

Wenwen Gong¹, Wei Zhang², Haolan Su³

¹Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing 100097, China.

Environmental science & technology

|November 21, 2025

概括

长期使用可生物降解的聚乙烯基酸甲 (PBAT) 覆盖物会改变土壤微生物群落. 研究人员确定了PBAT降解细菌,并开发了一个加强整治的联盟,为可持续农业提供了洞察力.

科学领域:

环境科学环境科学
微生物学微生物学
土壤科学土壤科学

背景情况:

传统的塑料对环境构成风险,推动了对可生物降解替代品的需求,例如聚乙烯基酸甲 (PBAT).
了解PBAT在土壤中的长期生态影响和降解效率对于可持续应用至关重要.

研究的目的:

调查多年PBAT覆盖物应用对土壤微生物群落动态的影响.
识别能够降解PBAT的微生物,并评估它们的数量.
制定提高土壤生态系统中PBAT降解的策略.

主要方法:

在使用PBAT土1至3年后,分析土壤微生物群落的组成和多样性.
分析土壤微生物网络,以评估社区的相互作用.
使用培养依赖方法隔离和识别PBAT降解细菌.
应用高通量人工选择来创建具有增强降解能力的微生物联盟.

主要成果:

应用PBAT显著改变了土壤微生物群落的结构和多样性.
在长时间暴露于PBAT的细菌和真菌网络中观察到复杂性和连接性增加.
在PBAT覆盖的持续时间和活性PBAT降解剂的丰度之间发现了正相关性.
来自Pseudomonadota和Actinomycetota类的十种PBAT降解细菌菌株被分离出来,并构建了一个具有增强降解活性的联盟.

结论:

多年PBAT使用重塑土壤微生物群落,可能随着时间的推移增强降解能力.
人工选择是开发有效的微生物联盟的有希望的策略,用于PBAT残留物的生物修复.
这项研究为管理可生物降解土影响和促进土壤健康提供了有价值的见解.

关键词:

在PBAT和PBAT之间人工选择人工选择可生物降解的塑料土微生物群落中的微生物群落.整治整治整治整治整治

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