SEASONAL PATTERN OF N2O CONCENTRATIONS AND EMISSIONS IN THE SEWAGE-ENRICHED RIVERS: CASE OF CHAOHU LAKE BASIN IN SOUTHEAST CHINA

doi:10.15666/aeer/1704_79737985

	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
刊名	APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
	2019
卷号	17 期号:4 页码:7973-7985
关键词	nitrous oxide concentration nitrification flux urban river
ISSN号	1589-1623
DOI	10.15666/aeer/1704_79737985
通讯作者	Li, F.(lifcas@gmail.com)
英文摘要	Two 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.
资助项目	Science & 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]
WOS关键词	NITROUS-OXIDE EMISSIONS ; GAS TRANSFER VELOCITY ; DISSOLVED-OXYGEN ; EXCHANGE ; METHANE ; SURFACE ; DENITRIFICATION ; RESERVOIRS ; TURBULENCE ; WETLANDS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	CORVINUS UNIV BUDAPEST
WOS记录号	WOS:000478066700054
资助机构	Science & 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
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58199]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, F.
作者单位	1.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
推荐引用方式 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.