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The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season
Dong, Zhixin1,2; Zhu, Bo1,2; Zeng, Zebin1,3
Corresponding AuthorBo Zhu
2014
Source PublicationENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
ISSN2050-7887
EISSN2050-7895
Volume16Issue:11Pages:2545-2553
SubtypeArticle
AbstractThe effects of nitrogen fertilization regimes on N2O emissions and denitrification rates were evaluated by in situ field incubation experiments with intact soil cores and the acetylene block technique. Intact soil cores were collected from long-term field experiments involving several N fertilization regimes, including single synthetic N fertilizer (N), organic manure (OM), synthetic N, P. K fertilizer (NPK), organic manure with synthetic fertilizer (OMNPK), crop straw residue with synthetic fertilizer (SRNPK) and no nitrogen fertilizer (NF). N2O was sampled from the head space of the cylinders to determine the daily N2O emission and denitrification rate. The results showed that the N2O emissions were greatly influenced by the specific fertilization regime even when the same nitrogen rate was applied. The mean N2O emissions and denitrification rates from the N, OM, NPK, OMNPK and SRNPK treatment were 2.22, 2.66, 1.94, 2.53, 1.67 and 4.63, 5.96, 4.15, 5.41, 3.65 mg per m(2) per day, respectively. The application of OM significantly increased the N2O emission and denitrification compared to the application of NPK because of the high soil organic carbon (SOC) content of OM. However, SRNPK increased the SOC content and decreased the N2O emissions significantly compared to the OM and OMNPK treatments because the addition of crop straw with a high C/N ratio to soil with a low inorganic N content induced N immobilization. The contents of soil nitrate and ammonium were the main limiting factors for N2O emissions in a positive regression as follows: Ln (N2O) = 2.511 + 1.258 x Ln ([NH4+] + [NO3-). Crop straw residue combined with synthetic fertilizer is recommended as an optimal strategy for mitigating N2O emissions and denitrification-induced N loss in rain-fed croplands.
KeywordNitrous-oxide Emissions Greenhouse-gas Emissions North China Plain Filled Pore-space Organic Fertilization Field Experiments Soil Residue Nitrate Fluxes
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1039/c4em00185k
URL查看原文
WOS Subject ExtendedChemistry ; Environmental Sciences & Ecology
Indexed BySCI
WOS KeywordNITROUS-OXIDE EMISSIONS ; GREENHOUSE-GAS EMISSIONS ; NORTH CHINA PLAIN ; FILLED PORE-SPACE ; ORGANIC FERTILIZATION ; FIELD EXPERIMENTS ; SOIL ; RESIDUE ; NITRATE ; FLUXES
Language英语
Quartile3区
TOP
WOS SubjectChemistry, Analytical ; Environmental Sciences
WOS IDWOS:000344131200009
Funding OrganizationNatural Science Foundation of China(41330744) ; National Basic Research Program of China(2012CB417101)
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7989
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Sichuan Agr Univ, Coll Resources & Environm, Chengdu 611130, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Dong, Zhixin,Zhu, Bo,Zeng, Zebin. The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2014,16(11):2545-2553.
APA Dong, Zhixin,Zhu, Bo,&Zeng, Zebin.(2014).The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,16(11),2545-2553.
MLA Dong, Zhixin,et al."The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 16.11(2014):2545-2553.
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