The influence of hyporheic upwelling fluxes on inorganic nitrogen concentrations in the pore water of the Weihe River

doi:10.1016/j.ecoleng.2017.12.012

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	The influence of hyporheic upwelling fluxes on inorganic nitrogen concentrations in the pore water of the Weihe River
	Wang, Weize 1; Song, Jinxi 1,2; Zhang, Guotao 3,4; Liu, Qi 1; Guo, Weiqiang 1; Tang, Bin 1; Cheng, Dandong 2,4; Zhang, Yan1
刊名	ECOLOGICAL ENGINEERING
	2018-03-01
卷号	112 页码:105-115
关键词	Hyporheic zone Nitrogen Pore water The Weihe River Upwelling fluxes
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2017.12.012
英文摘要	Hyporheic zone is an important region of nitrogen removal in river systems. Hyporheic exchange generally leads to heterogeneous redox environments, which are conducive to nitrogen transformation. This study seeks to determine the influence of hyporheic upwelling fluxes on inorganic nitrogen (NH4+, NO3-, and NO2-) concentrations in the sediment pore water of the Weihe River, China. The patterns and magnitudes of hyporheic water exchange on 12 August 2016 were derived by a one-dimensional heat transport model, and inorganic nitrogen concentrations in the pore water, surface water, and groundwater were obtained. The results indicated that hyporheic water exchange was characterized by upwelling at each point during the test period. Moreover, NH4+ dominated the hyporheic zone from 0 to 45 cm, likely due to organic nitrogen mineralization. Additionally, a non-linear relationship was observed between NH4+ concentrations and upwelling fluxes. This relationship was derived by analyzing the effect of upwelling on biogeochemical activity and nitrogen transformation. Notably, increasing upwelling fluxes less than 400 mm/d resulted in high NH4+ concentrations, whereas fluxes exceeding 400 mm/d led to low NH4+ concentrations. Overall, the variations in inorganic nitrogen associated with hyporheic water exchange are of great importance for controlling nitrogen pollution and maintaining sustainable health in river systems.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000424938300014
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/21397]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Song, Jinxi
作者单位	1.Northwest Univ Xian, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weize,Song, Jinxi,Zhang, Guotao,et al. The influence of hyporheic upwelling fluxes on inorganic nitrogen concentrations in the pore water of the Weihe River[J]. ECOLOGICAL ENGINEERING,2018,112:105-115.
APA	Wang, Weize.,Song, Jinxi.,Zhang, Guotao.,Liu, Qi.,Guo, Weiqiang.,...&Zhang, Yan.(2018).The influence of hyporheic upwelling fluxes on inorganic nitrogen concentrations in the pore water of the Weihe River.ECOLOGICAL ENGINEERING,112,105-115.
MLA	Wang, Weize,et al."The influence of hyporheic upwelling fluxes on inorganic nitrogen concentrations in the pore water of the Weihe River".ECOLOGICAL ENGINEERING 112(2018):105-115.