Within-lake variability and environmental controls of sediment denitrification and associated N2O production in a shallow eutrophic lake

doi:10.1016/j.ecoleng.2016.10.023

CORC > 武汉植物园 > 中国科学院武汉植物园

	Within-lake variability and environmental controls of sediment denitrification and associated N2O production in a shallow eutrophic lake
	Yao, Lu 1,2,3,4; Jiang, Xiaoliang 4; Chen, Chengrong 1,3; Liu, Guihua 4; Liu, Wenzhi 4
刊名	ECOLOGICAL ENGINEERING
	2016-12-01
卷号	97 页码:251-257
关键词	Eutrophication Denitrification potential Donghu lake Greenhouse gas Nitrogen pollution
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2016.10.023
英文摘要	Excess nitrogen (N) in lakes may lead to eutrophication and many attendant environmental problems such as water quality decline and loss of aquatic biodiversity. Denitrification in lake sediments can alleviate the effects of eutrophication through removal of N to the atmosphere as N2O and N-2. However, N2O contributes to the greenhouse effect and global warming. In this study, we measured three denitrification parameters (i.e., potential denitrification rate, unamended denitrification rate and net N2O production rate) in surface sediments which were collected from 7 sub-lakes of the Lake Donghu, one of the most eutrophic lakes in China. The results showed that a range of water quality and sediment characteristics (e.g., total N and total phosphorus) varied significantly among sub-lakes. The unamended denitrification rate varied between 0.51 and 26.0 ngN g(-1) h(-1), while the N2O production rate ranged from less than 0 to 1.68 ng N g(-1)h(-1). However, there was no significant difference among the sub-lakes in these denitrification parameters. The unamended denitrification rate was positively related to the water NO3 concentration and sediment moisture and bulk density. The findings of the present study suggest that sediments in eutrophic lakes can remove large quantities of N through denitrification and may become a significant source of N2O if the N input is maintained or to increase. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	National Science Foundation of China[31570535]
WOS研究方向	Environmental Sciences & Ecology ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000388580200026
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/3576]
专题	中国科学院武汉植物园
通讯作者	Liu, Wenzhi
作者单位	1.Griffith Univ, Environm Futures Res Inst, Nathan, Qld 4111, Australia 2.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China 3.Griffith Univ, Griffith Sch Environm, Nathan, Qld 4111, Australia 4.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Yao, Lu,Jiang, Xiaoliang,Chen, Chengrong,et al. Within-lake variability and environmental controls of sediment denitrification and associated N2O production in a shallow eutrophic lake[J]. ECOLOGICAL ENGINEERING,2016,97:251-257.
APA	Yao, Lu,Jiang, Xiaoliang,Chen, Chengrong,Liu, Guihua,&Liu, Wenzhi.(2016).Within-lake variability and environmental controls of sediment denitrification and associated N2O production in a shallow eutrophic lake.ECOLOGICAL ENGINEERING,97,251-257.
MLA	Yao, Lu,et al."Within-lake variability and environmental controls of sediment denitrification and associated N2O production in a shallow eutrophic lake".ECOLOGICAL ENGINEERING 97(2016):251-257.