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Interactions between dicyandiamide and periphytic biofilms in paddy soils and subsequent effects on nitrogen cycling
Zhao, Yanhui1,3,5; Liu, Huafeng2; Wang, Renyong4; Wu, Chenxi1
2020-05-20
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume718Issue:1Pages:8
Abstract

Dicyandiamide (DCD) is commonly used as nitrification inhibitors which has the potential to reduce nitrogen loss from paddy soils. In paddy systems, periphytic biofilms are commonly presented at the soil/water interface and show significant effects on nutrient cycling. However, the interaction between DCD and periphytic biofilms in paddy and subsequent effects on nitrogen cycling is unclear. In this work, microcosm experiments were carried out to study the interaction between the periphytic biofilms and DCD and the potential influence on nitrogen cycling from in paddy. Results showed that DCD affected the development of periphytic biofilms, while the presence of periphytic biofilms accelerated DCD degradation. Results also showed DCD application reduced nitrification potential mainly by inhibiting ammonia-oxidizing bacteria (AOB). Higher DCD dosage increased NH3 volatilization loss. However, presence of periphytic biofilm reduced the NH3 volatilization loss but increased denitrification. Our work contributes to a better understanding on the nitrogen cycling processes in paddy, and provides useful information for the improvement of nitrogen utilization efficiency and the control of non-point source pollution. (C) 2020 Elsevier B.V. All rights reserved.

KeywordNitrification inhibitor Periphytic biofilms Light Nitrogen cycling Paddy
DOI10.1016/j.scitotenv.2020.137417
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000526029000076
WOS KeywordNITRIFICATION INHIBITOR DICYANDIAMIDE ; ORGANIC-MATTER ; AMMONIA VOLATILIZATION ; MICROBIAL BIOMASS ; NITRATE UPTAKE ; DENITRIFICATION ; DCD ; DEGRADATION ; TEMPERATURE ; LOSSES
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/36109
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWu, Chenxi
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Shandong Inst Geol Survey, Jinan 250014, Peoples R China
3.Minist Ecol & Environm Peoples Republ China, Ctr Environm Monitoring & Sci Res Yangtze River B, Wuhan 430019, Peoples R China
4.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yanhui,Liu, Huafeng,Wang, Renyong,et al. Interactions between dicyandiamide and periphytic biofilms in paddy soils and subsequent effects on nitrogen cycling[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,718(1):8.
APA Zhao, Yanhui,Liu, Huafeng,Wang, Renyong,&Wu, Chenxi.(2020).Interactions between dicyandiamide and periphytic biofilms in paddy soils and subsequent effects on nitrogen cycling.SCIENCE OF THE TOTAL ENVIRONMENT,718(1),8.
MLA Zhao, Yanhui,et al."Interactions between dicyandiamide and periphytic biofilms in paddy soils and subsequent effects on nitrogen cycling".SCIENCE OF THE TOTAL ENVIRONMENT 718.1(2020):8.
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