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题名: The counter-balance between ammonia absorption and the stimulation of volatilization by periphyton in shallow aquatic systems
作者: She, Dongli1; Wang, Hongde1; Yan, Xiaoyuan2; Hu, Wei3; Zhang, Wenjuan1; Li, Jiuyu2; Wu, Chenxi4; Xia, Yongqiu2
关键词: Periphyton ; NH3 volatilization ; Biotic factors ; Structural equation model
刊名: BIORESOURCE TECHNOLOGY
发表日期: 2018
DOI: 10.1016/j.biortech.2017.07.100
卷: 248, 页:21-27
收录类别: SCI ; ISTP
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]: Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
研究领域[WOS]: Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
英文摘要: Ammonia (NH3) volatilization is one of the main pathways of nitrogen (N). The aim of this work was to investigate the determinants of NH3 volatilization, and characterize how the overlying water, sediment, and periphyton interact to regulate the rates of NH3 volatilization in shallow aquatic systems. Two types of structural equation modeling (SEM) methods ('elements' and 'components' models) were evaluated to examine the complex multivariate response of NH3 volatilization. The N components and the pH in the 'elements' models exerted significant and positive effects on NH3 volatilization. The water column accounted for the greatest variation of NH3 volatilization in a favorable pH environment and high NH4+-N concentrations according to the 'components' models. Although periphyton biofilm prohibited the direct flow of NH3 gas, this was counter-balanced by its indirect stimulation effects that positively affected the NH4+-N and DOC concentrations and the pH in both the overlying water and the sediment.
关键词[WOS]: DENITRIFYING BACTERIA ; SOIL ; BIOFILMS ; COMMUNITY ; ECOSYSTEM ; REMOVAL ; MANURE ; GENES ; MODEL ; WHEAT
语种: 英语
项目资助者: National Key Basic Research Project of China(2015CB158200) ; Natural Science Foundation of Jiangsu Province(BK20161503) ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; Qing Lan Project of Jiangsu Province
WOS记录号: WOS:000417047100004
ISSN号: 0960-8524
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50586
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Minist Educ, Key Lab Efficient Irrigat Drainage & Agr Soil Wat, Nanjing 210098, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China
3.New Zealand Inst Plant & Food Res Ltd, Private Bag 4704, Christchurch 8140, New Zealand
4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
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