Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments

doi:10.1007/s11270-020-04593-z

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室

	Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments
	Li, Jialin 1,2; Yu, Shuxian 1; Qin, Song 1,2
刊名	WATER AIR AND SOIL POLLUTION
	2020-05-27
卷号	231 期号:6 页码:16
关键词	Denitrification Anammox Functional community Geochemical constraint Eutrophic riverine sediments
ISSN号	0049-6979
DOI	10.1007/s11270-020-04593-z
通讯作者	Qin, Song(sqin@yic.ac.cn)
英文摘要	Excessive nitrogen (N) loading has had severe consequences in coastal zones around the world. Denitrification and anammox are major microbial pathways for removing N in aquatic environments before it is exported to the coast. To assess two processes in eutrophic riverine systems, the denitrification and anammox and their bacterial participants were investigated in sediments of the Xiaoqing (XQ) River and Jiaolai (JL) River in Northeast China. By combining the evidence from N-15 isotope tracing experiment and functional gene-based analysis, it was found that denitrification and anammox are ubiquitous along the investigated riverine sediments. The denitrification varied from 39.38 to 1433.01 nmol N-2 m(-2) h(-1). Moreover, the anammox rates were in the range of 15.91 to 1209.97 nmol N-2 m(-2) h(-1). Quantitative PCR results revealed that the nirK and nirS genes were in the order of 10(4)-10(6) copies g(-1) and 10(3)-10(5) copies g(-1), respectively, in both river sediments, while the hzsA was in the order of 10(6)-10(5) copies g(-1) in XQ at approximately two orders of magnitude compared with JL. The phylogenetic analysis of functional genes revealed the high diversity of the denitrifier and low diversity of anammox bacteria. Variance partitioning analyses verified that the grain particle characteristics were the major factor group determined the N removal efficiency. The denitrification and anammox processes were estimated to have removed 16.1% of the inorganic nitrogen inputs before being exported to Laizhou Bay, which highlights that a more extensive understanding of the regularity of the N removal processes is important in the technical remediation of eutrophication problems.
资助项目	National Natural Science Foundation of China[41106100] ; Science and Technology program of Yantai[2016YTZD0007]
WOS关键词	ANAEROBIC AMMONIUM OXIDATION ; NITROGEN LOSS ; POTENTIAL DENITRIFICATION ; VEGETATION GRADIENT ; OXIDIZING BACTERIA ; COASTAL WATERS ; COLNE ESTUARY ; LAIZHOU BAY ; ABUNDANCE ; RATES
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
WOS记录号	WOS:000535875700001
资助机构	National Natural Science Foundation of China ; Science and Technology program of Yantai
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/29077]
专题	海岸带生物学与生物资源利用重点实验室烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
通讯作者	Qin, Song
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Biol & Bioresource Conservat, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Li, Jialin,Yu, Shuxian,Qin, Song. Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments[J]. WATER AIR AND SOIL POLLUTION,2020,231(6):16.
APA	Li, Jialin,Yu, Shuxian,&Qin, Song.(2020).Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments.WATER AIR AND SOIL POLLUTION,231(6),16.
MLA	Li, Jialin,et al."Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments".WATER AIR AND SOIL POLLUTION 231.6(2020):16.