DOI: 10.1016/j.atmosenv.2014.09.079
Scopus记录号: 2-s2.0-84918499743
论文题名: Interaction between nitrification, denitrification and nitrous oxide production in fumigated soils
作者: Yan D ; , Wang Q ; , Mao L ; , Ma T ; , Li Y ; , Ouyang C ; , Guo M ; , Cao A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 82
结束页码: 86
语种: 英语
英文关键词: Denitrification
; Dissolved nitrogen
; Nitrification
; Nitrous oxide
; Soil fumigation
Scopus关键词: Amino acids
; Denitrification
; Fumigation
; Nitrification
; Nitrogen
; Nitrogen oxides
; Pesticides
; Dissolved nitrogen
; Nitrification and denitrification
; Nitrogenous compounds
; Nitrous oxide
; Nitrous oxide production
; Potential denitrification
; Soil fumigation
; Soil microbial biomass
; Soils
; amino acid
; ammonia
; chloropicrin
; dazomet
; dimethyl disulfide
; fumigant
; nitrogen
; nitrogen derivative
; nitrous oxide
; propylene
; unclassified drug
; denitrification
; fumigation
; microbial activity
; nitrification
; nitrous oxide
; soil nitrogen
; soil test
; soil type
; Article
; controlled study
; denitrification
; denitrifyer
; microbial activity
; microbial biomass
; mineralization
; nitrification
; nitrifyer
; nonhuman
; soil fumigation
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Soil fumigation can increase mineral nitrogen due to the mineralization of soil microbial biomass killed during the fumigation, and as a result nitrous oxide (N2O) emission would increase. In addition, a fumigant's impact on soil nitrification and denitrification would also alter the dynamics of N2O production in fumigated soils. Laboratory incubation studies were conducted to quantify the dynamic changes in N2O production following various fumigant treatments, and to determine the interaction between nitrification, denitrification and N2O production in fumigated soils. Results showed a substantial increase in NH4+-N and dissolved amino acids (DAA) during 7 days fumigation at 1WAF (week after fumigation). The application of fumigants caused significant inhibition of nitrification. However the results relating to potential denitrification were quite different. The rates of potential denitrification in chloropicrin (Pic) and dazomet (DZ) treatments at 1WAF were 3.5 and 5.6 times higher than the untreated control. Potential denitrification was greatly stimulated after Pic and DZ fumigation. The N2O production rates in Pic and DZ fumigated soil were significantly higher than the untreated control at 1WAF in the tested soil type. The cumulative N2O emissions in Pic and DZ fumigated soil were also significantly higher than the untreated control, but there were no significant differences among 1,3-dichloropropene (1,3-D), dimethyl disulfide (DMDS) and untreated control. A positive relationship between N2O production and potential denitrification (PDN) was observed (r=0.951, P<0.01). Pic and DZ are both nitrogenous compounds. The breakdown products of Pic and DZ would be available for microbial-aided denitrification reactions as nitrogen sources leading to N2O production, indicating that Pic and DZ degradation stimulated denitrification activity responsible for soil N2O production. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82033
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China; State Key Laboratory for Biology of Plant Disease and Insect Pests, Beijing, China
Recommended Citation:
Yan D,, Wang Q,, Mao L,et al. Interaction between nitrification, denitrification and nitrous oxide production in fumigated soils[J]. Atmospheric Environment,2015-01-01,103