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SEASONAL PATTERN OF N2O CONCENTRATIONS AND EMISSIONS IN THE SEWAGE-ENRICHED RIVERS: CASE OF CHAOHU LAKE BASIN IN SOUTHEAST CHINA
Yang, L. B.1,2; Li, F.2
2019
Source PublicationAPPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
ISSN1589-1623
Volume17Issue:4Pages:7973-7985
Corresponding AuthorLi, F.(lifcas@gmail.com)
AbstractTwo sewage-enriched urban rivers within Chaohu Lake Basin in Southeast China were selected to study the seasonal variations in Nitrous Oxide (N2O) concentrations, to improve the information of N2O concentrations and emissions in the similar areas. The results indicate that N2O concentrations ranged 16.12 similar to 4043.09 nmol/L and averaged 266.27 +/- 250.28 nmol/L during the sampling period. N2O was oversaturated in both rivers ranging 184 similar to 42084% (mean 2964%). The significantly higher level of N2O concentrations and emissions were observed in cold months. It is indicated that the two rivers were net sources of atmospheric N2O. N2O emissions ranged 11.32 similar to 2920.38 mu g N-N2O/m(2)/h with an overall mean value of 743.57 +/- 831.78 mu g N-N2O/m(2)/h. A significant negative correlation exists between N2O concentration and water temperature, which may be regulated by inverse tendencies between temperature and riverine nutrient loadings. Dissolved Oxygen (DO) is a predictor of N2O in Nanfei River explaining 60% of variability in N2O; while water temperature and NO3- are better predictors of N2O in Ershibu River explaining 73% of variability in N2O. The riverine N2O may be produced by denitrification in Nanfei River while by coupled nitrification-denitrification in Ershibu River.
Keywordnitrous oxide concentration nitrification flux urban river
DOI10.15666/aeer/1704_79737985
WOS KeywordNITROUS-OXIDE EMISSIONS ; GAS TRANSFER VELOCITY ; DISSOLVED-OXYGEN ; EXCHANGE ; METHANE ; SURFACE ; DENITRIFICATION ; RESERVOIRS ; TURBULENCE ; WETLANDS
Indexed BySCI
Language英语
Funding ProjectScience & Technology Basic Resources Investigation Program of China[2017FY101300] ; Foundation of Ethnic Group Culture Research Base of Nanling Corridor, Key Research Institute of Humanities and Social Sciences in Guangxi General Universities[2015KF03]
Funding OrganizationScience & Technology Basic Resources Investigation Program of China ; Foundation of Ethnic Group Culture Research Base of Nanling Corridor, Key Research Institute of Humanities and Social Sciences in Guangxi General Universities
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology ; Environmental Sciences
WOS IDWOS:000478066700054
PublisherCORVINUS UNIV BUDAPEST
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/58200
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, F.
Affiliation1.Chinese Res Inst Environm Sci, River & Coastal Environm Res Ctr, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yang, L. B.,Li, F.. SEASONAL PATTERN OF N2O CONCENTRATIONS AND EMISSIONS IN THE SEWAGE-ENRICHED RIVERS: CASE OF CHAOHU LAKE BASIN IN SOUTHEAST CHINA[J]. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,2019,17(4):7973-7985.
APA Yang, L. B.,&Li, F..(2019).SEASONAL PATTERN OF N2O CONCENTRATIONS AND EMISSIONS IN THE SEWAGE-ENRICHED RIVERS: CASE OF CHAOHU LAKE BASIN IN SOUTHEAST CHINA.APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,17(4),7973-7985.
MLA Yang, L. B.,et al."SEASONAL PATTERN OF N2O CONCENTRATIONS AND EMISSIONS IN THE SEWAGE-ENRICHED RIVERS: CASE OF CHAOHU LAKE BASIN IN SOUTHEAST CHINA".APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17.4(2019):7973-7985.
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