干旱区生态环境知识资源中心(Arid): Isotopic insights on continental water sources and transport in the mountains and plains of Southern South America

Arid

DOI	10.1080/10256016.2020.1819264
	Isotopic insights on continental water sources and transport in the mountains and plains of Southern South America
	Poca, Maria; Nosetto, Marcelo D.; Ballesteros, Silvina; Castellanos, George; Jobbagy, Esteban G.
通讯作者	Poca, M
来源期刊	ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
ISSN	1025-6016
EISSN	1477-2639
出版年	2020
卷号	56 期号:5-6 页码:586-605
英文摘要	Hosting the flattest sedimentary plains and highest Andean range of the continent, southern South America faces hydrological transformations driven by climate and land use changes. Although water stable isotopes can help understand these transformations, regional synthesis on their composition is lacking. We compiled for the first time a dataset of H and O isotopic composition for 1659 samples (precipitation, rivers, groundwater and lakes) along latitude (22.4 degrees S to 41.6 degrees S), longitude (55.3 degrees W to 71.5 degrees W), elevation (1-4700 m) and precipitation (similar to 50 to similar to 1500 mm/a) gradients encompassing the Chaco-Espinal-Pampas plains, their adjacent Andean Cordillera and smaller mountain ranges in-between. Emerging patterns reveal (i) only slight seasonal isotope trends in precipitation with no effects of event size, (ii) Atlantic/Amazonian vs. Pacific moisture supply to rivers north and south of the 'arid diagonal' of the continent, respectively, (iii) uniform isotopic composition in Atlantic/Amazonian-fed rivers vs. poleward isotope enrichment in Pacific-fed rivers caused by the elevation decline of the Andes, (iv) strong direct evaporation effect in rivers and shallow (<1 m) phreatic groundwater of the plains. We provide the first integrated water isotope geographical patterns of southern South America helping to improve our understanding of its water cycling patterns at the atmosphere and the land.
英文关键词	d-excess GNIP and GNIR groundwater evaporation hydrogen-2 isotope hydrology mountains oxygen-18 precipitation recycling sedimentary plains South America
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000570258900001
WOS关键词	MODERN PRECIPITATION ; STABLE-ISOTOPES ; CLIMATE-CHANGE ; BUENOS-AIRES ; PALEOALTIMETRY ; DEFORESTATION ; SEASONALITY ; ARGENTINA ; SYSTEMS
WOS类目	Chemistry, Inorganic & Nuclear ; Environmental Sciences
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326354
作者单位	[Poca, Maria; Nosetto, Marcelo D.; Ballesteros, Silvina; Castellanos, George; Jobbagy, Esteban G.] Univ Nacl San Luis, Inst Matemat Aplicada San Luis, Grp Estudios Ambientales, CONICET, San Luis, Argentina; [Nosetto, Marcelo D.] Catedra Climatol Agr FCA UNER, Oro Verde, Entre Rios, Argentina
推荐引用方式 GB/T 7714	Poca, Maria,Nosetto, Marcelo D.,Ballesteros, Silvina,et al. Isotopic insights on continental water sources and transport in the mountains and plains of Southern South America[J],2020,56(5-6):586-605.
APA	Poca, Maria,Nosetto, Marcelo D.,Ballesteros, Silvina,Castellanos, George,&Jobbagy, Esteban G..(2020).Isotopic insights on continental water sources and transport in the mountains and plains of Southern South America.ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES,56(5-6),586-605.
MLA	Poca, Maria,et al."Isotopic insights on continental water sources and transport in the mountains and plains of Southern South America".ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 56.5-6(2020):586-605.