干旱区生态环境知识资源中心(Arid): Hydrogeological conceptual model of an irrigated agricultural area, Buenos Aires Province, Argentina

Arid

DOI	10.1016/j.gsd.2020.100486
	Hydrogeological conceptual model of an irrigated agricultural area, Buenos Aires Province, Argentina
	Marquez Molina, John Jairo; Fabian Lemeillet, Alberto; Mabel Sainato, Claudia
通讯作者	Molina, JJM (corresponding author), Univ Buenos Aires, Catedra Fis, Fac Agron, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina.
来源期刊	GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
ISSN	2352-801X
出版年	2021
卷号	12
英文摘要	In Argentina, the complementary irrigation has increased in most agricultural regions, where it is necessary to minimize possible negative impacts on the quantity and quality of groundwater. Numerical modeling techniques are used to obtain projections of the aquifer dynamics, for which a conceptual model is needed that provides the input data in the numerical simulations. A hydrogeological conceptual model for a rural area of Buenos Aires Province (Argentina), where complementary irrigation has caused significant depletion of groundwater levels during the irrigation season, has been developed. It was based on available geophysical and hydrogeological information and measurements of piezometric levels and hydraulic parameters of the aquifer together with the geochemical analysis of groundwater. This model was imported to a numerical model and the hydrogeological parameters were adjusted by the calibration with static piezometric levels measured in the wells. The conceptual model was validated satisfactorily using a fitting criterion to reach a value of root mean square error less than 5%. Different simulations of the probable drawdowns of the levels due to pumping were performed in the study area. The main hydrogeological unit is semi-confined, mostly comprising of a multilayer unit with good quality of water. Its minimum and maximum thickness was 60 and 240 m, respectively. The groundwater flows northwards from the hilly area to the plains. The recharge was 4.6 mm.year(-1), representing 5% of annual precipitation. Dynamic simulations show that the aquifer gets dried, which questions its sustainability. The alternating condition of the source or drain of the streams depends on the irrigation period or the dry season, respectively. Great drawdowns of piezometric levels in some areas might be the cause of changes in water classification. These results lead to the need of planning the use of groundwater as a complement to agricultural activity, considering sustainable employment of the resource.
英文关键词	Conceptual hydrogeological model Complementary irrigation Aquifer Geophysics
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000694847500006
WOS关键词	OASIS
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; 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/2XILL650/363493
作者单位	[Marquez Molina, John Jairo; Fabian Lemeillet, Alberto; Mabel Sainato, Claudia] Univ Buenos Aires, Catedra Fis, Fac Agron, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Marquez Molina, John Jairo,Fabian Lemeillet, Alberto,Mabel Sainato, Claudia. Hydrogeological conceptual model of an irrigated agricultural area, Buenos Aires Province, Argentina[J],2021,12.
APA	Marquez Molina, John Jairo,Fabian Lemeillet, Alberto,&Mabel Sainato, Claudia.(2021).Hydrogeological conceptual model of an irrigated agricultural area, Buenos Aires Province, Argentina.GROUNDWATER FOR SUSTAINABLE DEVELOPMENT,12.
MLA	Marquez Molina, John Jairo,et al."Hydrogeological conceptual model of an irrigated agricultural area, Buenos Aires Province, Argentina".GROUNDWATER FOR SUSTAINABLE DEVELOPMENT 12(2021).