细菌注射的生物炭通过微生物重组和pH调节来增强铜的固定和碳封存
Leizhen Rao1, Lingya Kong1, Lina Wang1
1Key Laboratory of Soil Environment Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China.
Eco-Environment & Health
|December 24, 2025
概括
生物炭修正案通过增加pH值和有机物质,减少生物可用铜来改善酸性果园土壤. 细菌注射的生物炭在土壤恢复和碳循环方面表现出卓越的结果.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 强化农业导致土壤酸化和重金属污染.
- 生物炭修正案为土壤整治提供了一个可持续的解决方案.
- 生物碳复合材料在重金属和碳循环中的协同机制需要进一步研究.
研究的目的:
- 研究基于生物炭的修改对酸性果园土壤中铜稳定性和碳动态的影响.
- 阐明普通生物炭,细菌注射生物炭和含贝粉的生物炭的协同机制.
- 了解土壤特性,微生物过程和修改效率之间的相互作用.
主要方法:
- 薄膜扩散梯度 (DGT) 技术用于评估生物可用性铜.
- 里叶变换离子循环子共振质谱 (FT-ICR MS) 用于溶解有机物分析.
- 高通量测序用于评估土壤微生物社区的结构和功能.
主要成果:
- 所有修改都增加了土壤pH值和有机物质,显著减少了可生物利用的铜 (60%-73%).
- 细菌注射的生物炭表现出卓越的性能,将微生物代谢率 (qCO2) 降低了44%,并丰富了有益的微生物种群.
- 修改改变了溶解有机物组成,表明稳定碳池的微生物循环加速.
结论:
- 基于生物炭的修正案有效地固定铜,并增强酸性土壤中的土壤碳封存.
- 细菌注射生物炭为生态恢复和污染农田的可持续管理提供了一个有希望的战略.
- 土壤特性和微生物过程是铜生物利用率和碳动态的关键调节者,pH间接影响微生物活动.
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