添加纤维素和半纤维素降解微生物在堆肥过程中加剧了氧化排放
Xinyi Yang1, Pengpeng Duan1, Qiumei Liu1
1Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, China; Institutional Center for Shared Technologies and Facilities of Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.
用降解纤维素的微生物注射堆肥显著增加了氧化 (N2O) 排放. 需要进一步研究成本有效的策略,以减轻堆肥过程中的这些排放.
科学领域:
- 环境微生物学 环境微生物学
- 土壤科学 土壤科学
- 废物管理 废物管理
背景情况:
- 堆肥是一种常见的废物管理实践.
- 氧化 (N2O) 是一个强大的温室气体,在堆肥过程中排放出来.
- 纤维素和半纤维素降解微生物经常用于堆肥.
研究的目的:
- 调查注射纤维素和半纤维素降解微生物在堆肥过程中对N2O排放的影响.
- 阐明影响N2O生产和减少的潜在微生物机制.
主要方法:
- 堆肥丝虫便和桑树枝,有或没有微生物注射.
- 量化总的N2O排放量. 总的N2O排放量. 总的N2O排放量.
- 分析涉及循环 (amoA,nirK,nosZ) 的关键微生物基因的丰富性.
主要成果:
- 接种剂显著增加了总N2O排放量10.4%和26.7%.
- 增强的N2O生产与氨氧化细菌 (AOB) 和脱细菌的增加有关.
- 微生物注射也刺激了N2O减少到N2由于增加了nosZ基因丰度.
结论:
- 用纤维素和半纤维素降解微生物进行注射可以在堆肥过程中增加N2O排放.
- 了解微生物通路对于管理N2O排放至关重要.
- 制定减轻N2O的战略对于可持续的堆肥至关重要.
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