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Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China
Yang Libiao1,2; Yan Weijin1; Ma Pei1; Wang Jianing1
2011-10-01
Source PublicationJOURNAL OF GEOGRAPHICAL SCIENCES
Volume21Issue:5Pages:820-832
AbstractThis study was performed at three eutrophic rivers in Southeast China aiming to determine the magnitude and patterns of dissolved N2O concentrations and fluxes over a seasonal (in 2009) and diurnal (24 h) temporal scale. The results showed that N2O concentrations varied from 0.28 to 0.38 (mean 0.32 +/- 0.04), 0.29 to 0.46 (mean 0.37 +/- 0.07), and 2.07 to 3.47 (mean 2.84 +/- 0.63) mu g N-N2O L-1 in the Fengle, Hangbu and Nanfei rivers, respectively, in the diurnal study performed during the summer of 2008. The study found that mean N2O concentration and estimated N2O flux (67.89 +/- 6.71 mu g N-N2O m(-2) h(-1)) measured from the Nanfei River with serious urban wastewater pollution was significantly higher than those from the Fengle and the Hangbu Rivers with agricultural runoff. In addition, the seasonal study during June and December of 2009 also showed that the mean N2O concentration (10.59 +/- 14.67 mu g N-N2O L-1) and flux (236.87 +/- 449.74 mu g N-N2O m(-2) h(-1)) observed from the Nanfei River were significantly higher than those from the other two rivers. Our study demonstrated both N2O concentrations and fluxes exhibited seasonal and diurnal fluctuations. Over three consecutive days during the summer of 2008, N2O accumulation rates varied within the range of 3.91-7.21, 2.76-15.71, and 3.23-30.03 mu g N-N2O m(-2) h(-1) for the Fengle, Hangbu and Nanfei Rivers, respectively, and exponentially decreased with time.
SubtypeArticle
KeywordNitrous Oxide Concentration And Flux Eutrophic River Seasonal And Diurnal Variations
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedPhysical Geography
WOS KeywordNITROUS-OXIDE N2O ; TRANSFER VELOCITY ; SEINE RIVER ; EMISSIONS ; DENITRIFICATION ; ESTUARY ; NITRIFICATION ; OXYGEN ; SEDIMENT ; PATTERNS
Indexed BySCI
Language英语
WOS SubjectGeography, Physical
WOS IDWOS:000293863000004
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68104
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYan Weijin
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yang Libiao,Yan Weijin,Ma Pei,et al. Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2011,21(5):820-832.
APA Yang Libiao,Yan Weijin,Ma Pei,&Wang Jianing.(2011).Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China.JOURNAL OF GEOGRAPHICAL SCIENCES,21(5),820-832.
MLA Yang Libiao,et al."Seasonal and diurnal variations in N2O concentrations and fluxes from three eutrophic rivers in Southeast China".JOURNAL OF GEOGRAPHICAL SCIENCES 21.5(2011):820-832.
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