title: A regulating method for reducing nitrogen loss based on enriched ammonia-oxidizing bacteria during composting.
abstract: In this study, enriched ammonia-oxidizing bacteria (AOB) were acquired by domesticated cultivation, followed by inoculation into the co-composting of rice straw and chicken manure. The effect of inoculation on nitrogen loss, the succession of bacterial community and the correlation between the key bacteria and environmental factors were investigated. The results showed that inoculation could reduce ammonia emission and nitrogen loss by transforming ammonium into nitrite. Inoculation also increased the amount and abundance of bacterial community. Redundancy analysis showed that indigenous and exogenous bacteria in inoculation group, compared with those in control group, were positively correlated with nitrite but negatively correlated with ammonium, demonstrating that the former contributed to the lower ammonia emission and nitrogen loss. Based on these results, the application of enriched AOB was proposed as a new method of resource recycle and improvement of composting technology.
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yanni
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Mingxiao
authors.initials: M
authors.lastname: Li
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Xueqin
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Yuquan
authors.initials: Y
authors.lastname: Wei
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Xie
authors.affiliation: College of Life Science, Northeast Agricultural University, Harbin 150030, China. Electronic address: weizimin@neau.edu.cn.
authors.forename: Zimin
authors.initials: Z
authors.lastname: Wei
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D020562:Betaproteobacteria / Q000378:metabolism; D058448:Biota; D008372:Manure / Q000382:microbiology*; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D010084:Oxidation-Reduction; D012037:Refuse Disposal / Q000379:methods; D012987:Soil / Q000737:chemistry
chemical_list: D008372:Manure; D009573:Nitrites; D012987:Soil; D000641:Ammonia; D009584:Nitrogen
keywords: Bacterial diversity; Composting; Enriched AOB; Nitrogen loss; Redundancy analysis