期刊
BIORESOURCE TECHNOLOGY
卷 345, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.126417
关键词
Full scale composting; Inoculation; Bacterial network; Harmless disposal; Microbial community
资金
- National Key Research and Development Program of China [2016YFD0800607]
- Science and technology plan of Tibet [XZ201901NB05]
- Science and technology plan of Inner Mongolia [2019GG346]
- Open Research Fund from the Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agriculture & Animal Husbandry University), Ministry of Education, China [XZAJYBSYS-2020-02]
- Joint project of China Agricultural University [XZ202101YD0013C]
- Tibet Institute of agriculture and animal husbandry, Central government guides local projects [XZ202101YD0013C]
Turning and inoculation in composting can significantly improve the efficiency of organic carbon degradation and reduce the abundance of potential pathogens, while also promoting the increase in relative abundance of certain bacteria. Network analysis showed that turning increased the number of indigenous core bacteria, while inoculation enhanced the interaction among key bacterial network.
Window composting with inoculation or frequent turning is a superior way to improve traditional composting efficiency. However, the relationship between the innocent treatment in composting with inoculation or turning and microbial dynamics is unclear. Here, the impact of inoculation and turning for full scale composting on core bacterial community and their co-occurrence network as well as harmless level were compared by network analysis. Results showed that composts with both inoculation and turning had 46% increase of total organic carbon degradation compared to traditional composting and decreased the abundance of potential pathogens. The relative abundance of thermophilic bacteria and Galbibacter, Methylocaldum, Steroidobacter, etc. increased during composting with turning and inoculation. Luteimonas, Sphaerobacter, Turicibacter and Flavobacterium as core bacteria had significant difference between control and composting with enhanced innocent treatment efficiency. Network analysis suggested that turning increased the number of indigenous core bacteria and inoculation enhanced the interaction among key bacterial network.
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