干旱区生态环境知识资源中心(Arid): Nutrient dynamics in a hyporheic zone in response to a severe and prolonged dry period in a semi-arid river (Tafna wadi)

Arid

DOI	10.1007/s12665-019-8780-4
	Nutrient dynamics in a hyporheic zone in response to a severe and prolonged dry period in a semi-arid river (Tafna wadi)
	Zenagui, Ibrahim; Belaidi, Nouria; Benkebil, Zeyneb; Taleb, Amina
通讯作者	Zenagui, Ibrahim
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2020
卷号	79 期号:1
英文摘要	Against the backdrop of recent climate change issues, the intensity of dry periods is increasing in semi-arid environments due to high temperatures, evaporation and a shortage of precipitation in summer. The Tafna catchment, which is located in north-western Algeria and is characterised by a Mediterranean climate with a sub-dry tendency, has been subject to severe and prolonged dry periods. In order to understand the impact of prolonged dry periods on biogeochemical processes and nutrient exchange between surface water (SW) and hyporheic water (HW) within the (study) catchment, four sets of samples were taken upstream of the Tafna wadi during low-water (LW) periods over two years (2014-2015). Nitrate, nitrite, ammonium and chloride were measured in surface water (SW) and hyporheic water (HW) at depths of 30, 60 and 100 cm. The results showed a significant loss of nitrate and a considerable increase in ammonium in the hyporheic zone (HZ) during these severe conditions. This could be related to (i) high rates of denitrification and (ii) the process of dissimilatory nitrate reduction to ammonium (DNRA). This study indicated that a severe drought directly affects the nitrogen cycle that occurs in a hyporheic zone (HZ), and thus affects the functioning of this area relative to the wadi system as a whole.
英文关键词	Biogeochemical process Hyporheic zone Dry period Semi-arid Tafna wadi Nitrate
类型	Article
语种	英语
国家	Algeria
收录类别	SCI-E
WOS记录号	WOS:000503816100002
WOS关键词	NITROGEN DYNAMICS ; HYDRAULIC CONDUCTIVITY ; WATER EXCHANGE ; STREAM ; FLOW ; SEDIMENT ; SURFACE ; TERRESTRIAL ; PERSPECTIVE ; CATCHMENT
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312114
作者单位	Univ Tlemcen, Lab Ecol & Gest Ecosyst Nat LECGEN, BP 119, Tilimsen 13000, Algeria
推荐引用方式 GB/T 7714	Zenagui, Ibrahim,Belaidi, Nouria,Benkebil, Zeyneb,et al. Nutrient dynamics in a hyporheic zone in response to a severe and prolonged dry period in a semi-arid river (Tafna wadi)[J],2020,79(1).
APA	Zenagui, Ibrahim,Belaidi, Nouria,Benkebil, Zeyneb,&Taleb, Amina.(2020).Nutrient dynamics in a hyporheic zone in response to a severe and prolonged dry period in a semi-arid river (Tafna wadi).ENVIRONMENTAL EARTH SCIENCES,79(1).
MLA	Zenagui, Ibrahim,et al."Nutrient dynamics in a hyporheic zone in response to a severe and prolonged dry period in a semi-arid river (Tafna wadi)".ENVIRONMENTAL EARTH SCIENCES 79.1(2020).