期刊
BIORESOURCE TECHNOLOGY
卷 287, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121428
关键词
Vermicomposting; Nitrogen transformation; amoA; nirS; Earthworm
资金
- National Natural Science Foundation of China [51508318]
- Chenguang Program of Shanghai Education Development Foundation & Shanghai Municipal Education Commission [15CG53]
- Open Funding of Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration from East China Normal University [SHUES2017A04]
The effects of earthworms on nitrogen transformation and the responsible functional genes during disposal of sewage sludge and rice straw were investigated in this study. Vermicomposting resulted in the lower pH and total organic carbon (TOC) compared to the control treatment without earthworms. Moreover, the presence of earthworms could promote the nitrogen mineralization and nitrification process in vermicomposting. Earthworms increased the activity of ammonia monooxygenase and abundance of amoA-nitrifier and reduced its diversity, whereas they reduced the density of nirS-denitrifying bacteria but enhanced its diversity. Nitrosospira was the dominant amoA-nitrifier and earthworms stimulated its growth in the vermicomposting. The presence of earthworms could also affect the community composition of nirS-denitrifying bacteria despite most of the nirS-denitrifier was not be classified at the genus level. In conclusion, the presence of earthworms had significant influence on the diversity and abundances of amoA and nirS genes and affect the nitrogen bio-transformation in vermicomposting.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据