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  4. 中国科学院新生代地质与环境重点实验室
Isotopic compositions reveal the driving forces of high nitrate level in an urban river: Implications for pollution control

文献类型：期刊论文

作者Jiang, Hao1,3,4,5; Zhang, Qianqian1,2,3; Liu, Wenjing1,2,3; Zhang, Jiangyi1,2,3; Pan, Ke4; Zhao, Tong1,2,3; Xu, Zhifang1,2,3
刊名JOURNAL OF CLEANER PRODUCTION
出版日期2021-05-20
卷号298页码:11
ISSN号0959-6526
关键词Nitrate Source Isotope Urban MCMC mixing Model
DOI10.1016/j.jclepro.2021.126693
英文摘要High levels of nitrogen (N) in urban rivers are a global concern, but key evidence is lacking about their driving forces, which has limited the efficiency of water quality management and the sustainability of water resources. In this study, multiple stable isotopes (815N, 813C, 818O, and 8D) and an isotopic mixing model were used to reveal the causes of high nitrate (NO3?) levels in a typical urban basin and to identify appropriate methods to control N pollution in urban rivers. The NO3? concentrations and their correlations with isotopes (815N-NO3- and 818O-NO3-) indicated weak NO3? removal mechanisms (such as assimilation and denitrification). In-stream nitrification was typically prevailing, suggesting that NO3? in urban rivers could be extensively generated from in-stream process in addition to direct inputs from external sources. More than 60% of the annual NO3? flux of the river was from urban sources. A waste water treatment plant was an important yet underestimated NO3? source, which contributed 26% of the NO3? flux. Insufficient source control and prevailing in-stream nitrification, along with a lack of significant NO3? removal mechanisms, could be the major driving forces of the high NO3? levels. To reduce the levels, special attention should be paid to the waste water treatment plant and non-point sources aside from sewage and wastewater. Focus should also be placed on internal transformation processes that regulate NO3? levels. This study provides new implications for the restoration of urban rivers in China and other countries that are in a similar situation of tackling N pollution. (c) 2021 Elsevier Ltd. All rights reserved. Superscript/Subscript Available
WOS关键词WATER-QUALITY ; LAND-USE ; DANJIANGKOU RESERVOIR ; SEASONAL-VARIATIONS ; NITROGEN-SOURCES ; DUAL ISOTOPES ; STREAM ; DENITRIFICATION ; IDENTIFICATION ; BASIN
资助项目National Natural Science Foundation of China[41673020] ; National Natural Science Foundation of China[41730857] ; Key Research Program of the Chinese Academic of Sciences[ZDRW-ZS-20167-2] ; Youth Innovation Promotion Association CAS
WOS研究方向Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000643666700010
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Key Research Program of the Chinese Academic of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/101172]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Zhifang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
4.Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China
5.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Hao,Zhang, Qianqian,Liu, Wenjing,et al. Isotopic compositions reveal the driving forces of high nitrate level in an urban river: Implications for pollution control[J]. JOURNAL OF CLEANER PRODUCTION,2021,298:11.
APA Jiang, Hao.,Zhang, Qianqian.,Liu, Wenjing.,Zhang, Jiangyi.,Pan, Ke.,...&Xu, Zhifang.(2021).Isotopic compositions reveal the driving forces of high nitrate level in an urban river: Implications for pollution control.JOURNAL OF CLEANER PRODUCTION,298,11.
MLA Jiang, Hao,et al."Isotopic compositions reveal the driving forces of high nitrate level in an urban river: Implications for pollution control".JOURNAL OF CLEANER PRODUCTION 298(2021):11.

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来源：地质与地球物理研究所

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