Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate

doi:10.1016/j.ecoleng.2016.10.052

	Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate
	Bu, Hongmei 1; Song, Xianfang 1; Zhang, Yuan 2,3; Meng, Wei 2,3
刊名	ECOLOGICAL ENGINEERING
	2017
卷号	98 页码:105-113
关键词	Nitrate nitrogen Nitrogen isotope of nitrate Oxygen isotope of nitrate Nitrate sources Nitrification Denitrification
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2016.10.052
通讯作者	Bu, Hongmei(buhm2004@163.com) ; Zhang, Yuan(zhangyuan@craes.org.cn)
英文摘要	Due to the serious nitrate pollution in Northeast China, the in-stream nitrate and its isotopic composition (delta N-15-NO3 and delta O-18-NO3) were analyzed to explore the seasonal nitrate sources and its transformation processes combining with chemical indicators in the Haicheng River during the spring, early summer, late summer, and autumn seasons throughout the year of 2010. The nitrate nitrogen (NO3-N) concentrations in riverine water co-varied with the discharge data of the river, showing significant seasonal variations (p < 0.001) based on the one-way ANOVA. The riverine delta N-15-NO3 values and chloride (Cl-) variations suggested that NO3-N was mainly contributed by sewage/manure in spring. The NO3-N sources in early summer were largely induced by nitrification process from synthetic fertilizers. The combined application of delta N-15-NO3 and delta O-18-NO3 explained that the NO3-N sources in late summer and autumn were derived largely from soil organic matter and sewage/manure. Denitrification process of soil organic matter and sewage/manure in autumn and their nitrification process in late summer mostly controlled the NO3-N concentrations in river water. The results will provide useful information on nitrate sources of seasonal variations in isotope compositions of river systems for controlling NO3-N concentrations and improving the ecological quality near the Liaodong Bay and Bohai Sea in the near future. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences[SKLECRA2014OFP12] ; National Natural Science Foundation of China[41103069] ; China Scholarship Council[201404910228]
WOS关键词	CONTAMINATION SOURCES ; SOURCE IDENTIFICATION ; CHEMICAL INDICATORS ; 2 WATERSHEDS ; LAND-USE ; NITROGEN ; DENITRIFICATION ; DELTA-O-18 ; DELTA-N-15 ; CATCHMENTS
WOS研究方向	Environmental Sciences & Ecology ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000390454300014
资助机构	State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences ; National Natural Science Foundation of China ; China Scholarship Council
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/65239]
专题	中国科学院地理科学与资源研究所
通讯作者	Bu, Hongmei; Zhang, Yuan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 3.Chinese Res Inst Environm Sci, Lab Riverine Ecol Conservat & Technol, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Bu, Hongmei,Song, Xianfang,Zhang, Yuan,et al. Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate[J]. ECOLOGICAL ENGINEERING,2017,98:105-113.
APA	Bu, Hongmei,Song, Xianfang,Zhang, Yuan,&Meng, Wei.(2017).Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate.ECOLOGICAL ENGINEERING,98,105-113.
MLA	Bu, Hongmei,et al."Sources and fate of nitrate in the Haicheng River basin in Northeast China using stable isotopes of nitrate".ECOLOGICAL ENGINEERING 98(2017):105-113.