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Dissolved nitrous oxide and emission relating to denitrification across the Poyang Lake aquatic continuum
Wang, Huaxin1,3; Zhang, Lu2; Yao, Xiaolong2; Xue, Bin2; Yan, Weijin1,2
2017-02-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume52Pages:130-140
Corresponding AuthorYan, Weijin(yanwj@igsnrr.ac.cn)
AbstractMost aquatic ecosystems contribute elevated N2O to atmosphere due to increasing anthropogenic nitrogen loading. To further understand the spatial heterogeneity along an aquatic continuum from the upriver to wetland to lake to downriver, the study was conducted on spatial variations in N2O emission along Poyang Lake aquatic continuum during the flood season from 15 July 2013 to 10 August 2013. The results showed the N2O concentrations, the ratio of N2O/dinitrogen (N-2) gases production, N2O emission and denitrification rates ranged from 0.10 to 1.11 mu g N/L, -0.007% to 0.051%, -9.73 to 127 mu g N/m(2)/hr and 1.33 x 10(4) to 31.9 x 10(4) mu g N-2/m(2)/hr, respectively, across the continuum. The average N2O concentrations, the ratio of N2O/N-2 and N2O emission was significantly lower in wetlands as compared to the rivers and lake (p < 0.01). The significantly high denitrification rate and low N2O emission together highlighted that most N2O can be converted into N-2 via near complete denitrification in the Poyang Lake wetlands. Our study suggests that the wetlands might impact N2O budget in an integrated aquatic ecosystems. Moreover, N2O emission from different aquatic ecosystem should be considered separately when quantifying the regional budget in aquatic ecosystem. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordNitrous oxide gas Nitrogen Dinitrogen gas Denitrification Natural wetlands Poyang Lake
DOI10.1016/j.jes.2016.03.021
WOS KeywordGREENHOUSE-GAS EFFLUXES ; COASTAL-PLAIN WETLANDS ; CONTRASTING LAND-USES ; N2O EMISSIONS ; POTENTIAL DENITRIFICATION ; TRANSFER VELOCITY ; RIVER ESTUARY ; CHINA ; SEDIMENTS ; FLUXES
Indexed BySCI
Language英语
Funding ProjectResearch Program of State Key Laboratory of Lake Science and Environment[2012SKL012] ; CAS Key Project[KJZD-EW-TZ-G10] ; National Basic Research Program (973) of China[2012CB417005]
Funding OrganizationResearch Program of State Key Laboratory of Lake Science and Environment ; CAS Key Project ; National Basic Research Program (973) of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000394947500015
PublisherSCIENCE PRESS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/64808
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, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Huaxin,Zhang, Lu,Yao, Xiaolong,et al. Dissolved nitrous oxide and emission relating to denitrification across the Poyang Lake aquatic continuum[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,52:130-140.
APA Wang, Huaxin,Zhang, Lu,Yao, Xiaolong,Xue, Bin,&Yan, Weijin.(2017).Dissolved nitrous oxide and emission relating to denitrification across the Poyang Lake aquatic continuum.JOURNAL OF ENVIRONMENTAL SCIENCES,52,130-140.
MLA Wang, Huaxin,et al."Dissolved nitrous oxide and emission relating to denitrification across the Poyang Lake aquatic continuum".JOURNAL OF ENVIRONMENTAL SCIENCES 52(2017):130-140.
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