气候变化领域集成服务门户(CCPortal): Nitrate transformation and source tracking of Yarlung Tsangpo River using a multi-tracer approach combined with Bayesian stable isotope mixing model

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DOI	10.1016/j.envres.2024.118925
	Nitrate transformation and source tracking of Yarlung Tsangpo River using a multi-tracer approach combined with Bayesian stable isotope mixing model
	Bao, Yufei; Sun, Meng; Wang, Yuchun; Hu, Mingming; Hu, Peng; Wu, Leixiang; Huang, Wei; Li, Shanze; Wen, Jie; Wang, Zhongjun; Zhang, Qian; Wu, Nanping
发表日期	2024
ISSN	0013-9351
EISSN	1096-0953
起始页码	252
卷号	252
英文摘要	Excessive levels of nitrate nitrogen (NO3--N) could lead to ecological issues, particularly in the Yarlung Tsangpo River (YTR) region located on the Qinghai Tibet Plateau. Therefore, it is crucial to understand the fate and sources of nitrogen to facilitate pollution mitigation efforts. Herein, multiple isotopes and source resolution models were applied to analyze key transformation processes and quantify the sources of NO3.(-) The delta N-15-NO3- and delta O-18-NO3- isotopic compositions in the YTR varied between 1.23 parts per thousand and 13.64 parts per thousand and 7.88 parts per thousand 11.19 parts per thousand, respectively. The NO3--N concentrations varied from 0.08 to 0.86 mg/L in the dry season and 0.20-1.19 mg/L during the wet season. Nitrification remained the primary process for nitrogen transformation in both seasons. However, the wet season had a widespread effect on increasing nitrate levels, while denitrification had a limited ability to reduce nitrate. The elevated nitrate concentrations during the flood season were caused by increased release of NO3- from manure & sewage (M&S) and chemical fertilizers (CF). Future endeavors should prioritize enhancing management strategies to improve the utilization efficiency of CF and hinder the direct entry of untreated sewage into the water system.
英文关键词	Nitrate transformation; Nitrate sources; Dual stable isotope; Bayesian model; The Yarlung Zangbon river
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS记录号	WOS:001233889500001
来源期刊	ENVIRONMENTAL RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297666
作者单位	China Institute of Water Resources & Hydropower Research; China Institute of Water Resources & Hydropower Research; Yancheng Institute of Technology; Wuhan University of Technology
推荐引用方式 GB/T 7714	Bao, Yufei,Sun, Meng,Wang, Yuchun,et al. Nitrate transformation and source tracking of Yarlung Tsangpo River using a multi-tracer approach combined with Bayesian stable isotope mixing model[J],2024,252.
APA	Bao, Yufei.,Sun, Meng.,Wang, Yuchun.,Hu, Mingming.,Hu, Peng.,...&Wu, Nanping.(2024).Nitrate transformation and source tracking of Yarlung Tsangpo River using a multi-tracer approach combined with Bayesian stable isotope mixing model.ENVIRONMENTAL RESEARCH,252.
MLA	Bao, Yufei,et al."Nitrate transformation and source tracking of Yarlung Tsangpo River using a multi-tracer approach combined with Bayesian stable isotope mixing model".ENVIRONMENTAL RESEARCH 252(2024).