Microbial community responses to biochar addition when a green waste and manure mix are composted: A molecular ecological network analysis

被引:109
作者
Qiu, Xiuwen [1 ]
Zhou, Guixiang [1 ,2 ]
Zhang, Jiabao [2 ]
Wang, Wei [3 ]
机构
[1] Jiujiang Univ, Poyang Lake Ecoecon Res Ctr, Jiujiang 332005, Peoples R China
[2] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China
[3] Jiujiang Univ, Coll Chem & Environm Engn, Jiujiang 332005, Jiangxi, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
Green waste; Biochar; Microbial community; Network analysis; SOIL; WATER; DIVERSITY;
D O I
10.1016/j.biortech.2018.12.001
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
High-throughput sequencing and network analysis were used to investigate the dynamic changes and the effects on bacterial community structures in green waste compost after biochar addition. Biochar addition led to higher thermophilic temperatures and total nitrogen (TN) concentrations and a longer thermophilic period compared with no biochar addition. Biochar also greatly influenced the composition of the bacterial community. Nitriliruptoraceae and Bacillaceae abundances increased in the poultry manure after biochar treatment, and Alcaligenaceae, Rhodispirillaceae and Xanthomonadaceae were more abundant in the cattle manure. Dissolved organic carbon (DOC) and TN emerged as the key determinants of bacterial community composition. Network analysis revealed that DOC had strong positive associations with some taxa (e.g. Comamonas, Leucobacter and Acidimicrobiales), whereas TN had negative associations with other taxa (e.g. Microbacteriaceae and Aeromicrobium). This study has revealed the key taxa related to the carbon and nitrogen cycle during composting with biochar.
引用
收藏
页码:666 / 671
页数:6
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