干旱区生态环境知识资源中心(Arid): Evaluation of nitrogen and phosphorus in surface reservoirs of the semi-arid region of Brazil using mass balance

Arid

DOI	10.5935/1806-6690.20230057
	Evaluation of nitrogen and phosphorus in surface reservoirs of the semi-arid region of Brazil using mass balance
	Praxedes, Carine Fernandes; Lopes, Fernando Bezerra; de Andrade, Eunice Maia; da Silva, Thiago Teixeira; Becker, Helena
通讯作者	Praxedes, CF
来源期刊	REVISTA CIENCIA AGRONOMICA
ISSN	0045-6888
EISSN	1806-6690
出版年	2023
卷号	54
英文摘要	Water reservoirs were built in the semi-arid region to mitigate the effects of drought and water scarcity. However, these reservoirs are subject to variables that impact the volume and quality of the stored water, with the contribution of such nutrients as Total Nitrogen (TN) and Total Phosphorus (TP) being one of the main factors in intensifying the eutrophication process. The aim of this study was to quantify the principal inputs and outputs of nutrients (N and P) and calculate the nutrient balance, in order to verify the influence of seasonality on the import and export of these nutrients in surface reservoirs of the semi-arid region of Brazil. Seven campaigns were carried out between 2015 and 2016, with water samples collected at five points in the Pereira de Miranda reservoir and four in the General Sampaio reservoir. The inflow of nutrients was greater when the inflow rate of the water was higher. The balance showed the accumulation of 22.8 tons of TN and 2.8 tons of TP in the Pereira de Miranda reservoir, and 13 tons of TN and 1.5 tons of TP in the General Sampaio. These reservoirs are therefore retaining nutrients, acting as a storage site for nutrients transported by surface runoff in the basin of the Curu River. This increase in storage occurred mainly during the rainy season, when nutrient retention by the reservoirs impaired water quality, resulting in eutrophication, and making it diffi cult to meet the uses for which the reservoirs were intended.
英文关键词	Semi-arid regions Period of extreme drought Water reservoirs Nutrient input and output
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001052160500001
WOS关键词	WATER-QUALITY ; EUTROPHICATION ; IMPACT ; LAKES
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398418
推荐引用方式 GB/T 7714	Praxedes, Carine Fernandes,Lopes, Fernando Bezerra,de Andrade, Eunice Maia,et al. Evaluation of nitrogen and phosphorus in surface reservoirs of the semi-arid region of Brazil using mass balance[J],2023,54.
APA	Praxedes, Carine Fernandes,Lopes, Fernando Bezerra,de Andrade, Eunice Maia,da Silva, Thiago Teixeira,&Becker, Helena.(2023).Evaluation of nitrogen and phosphorus in surface reservoirs of the semi-arid region of Brazil using mass balance.REVISTA CIENCIA AGRONOMICA,54.
MLA	Praxedes, Carine Fernandes,et al."Evaluation of nitrogen and phosphorus in surface reservoirs of the semi-arid region of Brazil using mass balance".REVISTA CIENCIA AGRONOMICA 54(2023).