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DOI	10.1002/rra.3924
	Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi-arid Mediterranean agricultural catchment (North Africa)
	Zettam, Amin; Briak, Hamza; Kebede, Fassil; Ouallali, Abdessalam; Hallouz, Faiza; Taleb, Amina
通讯作者	Zettam, A (corresponding author)，Univ Abou Bekr Belkaid Tlemcen, LECGEN, Tilimsen, Algeria.
来源期刊	RIVER RESEARCH AND APPLICATIONS
ISSN	1535-1459
EISSN	1535-1467
出版年	2021-12
英文摘要	A major problem facing the water sector in Algeria is deteriorating water quality, which is strongly influenced by nutrient inputs to agricultural watersheds. To mitigate the effects of agricultural activities and enhance water quality, this study considered the impact of different best management practices (BMPs) in agriculture. The objective of the research was to evaluate the impacts of various agricultural BMPs on nitrate losses in the Sebdou catchment in north-west Africa using the Soil and Water Assessment Tool (SWAT) model in order to identify and recommend the most appropriate BMP. The study was carried out in two parts: first, the SWAT model was calibrated and validated to simulate discharge and nitrate losses at the outlet of the catchment, and second, the calibrated model was used to assess the effects of BMPs on nitrate losses. The hydrological modelling fitted well with the observed data for the calibration and validation periods (NSE between 0.63 and 0.65 and R-2 between 0.80 and 0.92). Nitrate simulation was also satisfactory (NSE = 0.58 and R-2 = 0.58), with the average nitrate exports at the outlet varying between 136 and 149 t N year(-1). Agricultural tillage practices were the main N input and plant uptake was the main N output. The simulation results of BMP scenarios (contour farming, strip cropping and terracing) showed a significant decrease in nitrate quantity in soil, nitrate yield in surface run-off and nitrate exports. The maximum reduction was observed from the use of parallel terraces, which reduced nitrate in soil by 17% (41 kg ha(-1)) and decreased nitrate flux exportation to below 133 t N year(-1) (a reduction of about 11%). This study provided useful information for implementation of the most effective agricultural BMPs in the catchment for stakeholders who are interested in soil and water management.
英文关键词	agricultural BMPs Mediterranean semi-arid region nitrate losses North Africa SWAT model
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000736081800001
WOS关键词	NONPOINT-SOURCE POLLUTION ; WATER-QUALITY ; SEDIMENT YIELD ; SWAT MODEL ; COST-EFFECTIVENESS ; CLIMATE ; REDUCTION ; RESERVOIR ; DYNAMICS ; IMPACTS
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377044
作者单位	[Zettam, Amin; Taleb, Amina] Abou Bekr Belkaid Univ UABB, SNVSTU, LECGEN, Tilimsen, Algeria; [Briak, Hamza; Kebede, Fassil] Mohammed VI Polytech Univ UM6P, AgroBioSci, CESFRA, Benguerir, Morocco; [Ouallali, Abdessalam] Hassan II Univ Casablanca UH2C, FSTM, LGPE, Mohammadia, Morocco; [Hallouz, Faiza] Djilali Bounaama Khemis Miliana Univ UDBKM, ENSH, LGEE, Khemis Miliana, Algeria
推荐引用方式 GB/T 7714	Zettam, Amin,Briak, Hamza,Kebede, Fassil,et al. Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi-arid Mediterranean agricultural catchment (North Africa)[J],2021.
APA	Zettam, Amin,Briak, Hamza,Kebede, Fassil,Ouallali, Abdessalam,Hallouz, Faiza,&Taleb, Amina.(2021).Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi-arid Mediterranean agricultural catchment (North Africa).RIVER RESEARCH AND APPLICATIONS.
MLA	Zettam, Amin,et al."Efficiencies of best management practices in reducing nitrate pollution of the Sebdou River, a semi-arid Mediterranean agricultural catchment (North Africa)".RIVER RESEARCH AND APPLICATIONS (2021).