Fluxes of chemical oxygen demand and nutrients in coastal rivers and their influence on water quality evolution in the Bohai Sea

doi:10.1016/j.rsma.2022.102322

	Fluxes of chemical oxygen demand and nutrients in coastal rivers and their influence on water quality evolution in the Bohai Sea
	Li, Zhaoran 1,2; Tian, Chongguo3 ; Sheng, Yanqing1
发表期刊	REGIONAL STUDIES IN MARINE SCIENCE
ISSN	2352-4855
	2022-05-01
卷号	52 页码:11
关键词	Chemical oxygen demand Nutrient Flux Coastal river Bohai Sea
DOI	10.1016/j.rsma.2022.102322
英文摘要	Chemical oxygen demand (COD) and nutrient level in water are key parameters for monitoring and assessing water quality. This study systematically investigated the fluxes of COD (CODCr, acidic CODMn, and alkaline CODMn) and nutrients (NH+4 -N, NO-3 -N, NO-2 -N, and PO3- 4 -P) in 36 major coastal rivers and their influence on the evolution of water quality in the Bohai Sea (BS). The results showed that most of the rivers around the BS are already heavily polluted considering COD, whereas they were less polluted by nutrients. The proportions of COD, NO-2 -N, and PO3- 4 -P during the rainy season, normal water season, and withered water period decreased, but the proportions of NH+4 -N and NO- 3 N increased. The fluxes of COD and PO3-4 -P were significantly affected by runoff, whereas the flux of dissolved inorganic nitrogen (DIN) was significantly affected by the concentration of DIN The molar N/P ratios in coastal rivers were higher than those in the BS. The molar N/P ratios obtained from the State Oceanic Administration of China (SOA) data and those calculated according to river fluxes had a significant linear correlation. The variation in the alkaline CODMn concentration announced by SOA was consistent with that calculated according to river fluxes, but the variation in DIN and PO3- concentrations was not consistent. The fluxes of CODCr and nutrients have decreased in recent years due to the implementation of pollution management schemes. This study provides a scientific reference for restoring ecological environment and protecting water quality in the BS. (c) 2022 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
关键词[WOS]	OCEAN GOVERNANCE ; POLLUTION ; BAY ; CHINA ; DELTA ; COD ; SALINITY ; DYNAMICS ; PATTERNS ; NITROGEN
研究领域[WOS]	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS记录号	WOS:000793641200001
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31078
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者	Sheng, Yanqing
作者单位	1.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhaoran,Tian, Chongguo,Sheng, Yanqing. Fluxes of chemical oxygen demand and nutrients in coastal rivers and their influence on water quality evolution in the Bohai Sea[J]. REGIONAL STUDIES IN MARINE SCIENCE,2022,52:11.
APA	Li, Zhaoran,Tian, Chongguo,&Sheng, Yanqing.(2022).Fluxes of chemical oxygen demand and nutrients in coastal rivers and their influence on water quality evolution in the Bohai Sea.REGIONAL STUDIES IN MARINE SCIENCE,52,11.
MLA	Li, Zhaoran,et al."Fluxes of chemical oxygen demand and nutrients in coastal rivers and their influence on water quality evolution in the Bohai Sea".REGIONAL STUDIES IN MARINE SCIENCE 52(2022):11.