干旱区生态环境知识资源中心(Arid): Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina

Arid

DOI	10.3390/w13243632
	Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina
	Garcias, Yanina; Torres Astorga, Romina; Ojeda, Guillermo; de los Santos Villalobos, Sergio; Tejeda, Samuel; Velasco, Hugo
通讯作者	Garcias, Y (corresponding author)，UNSL, CONICET, IMASL, Grp Estudios Ambient, RA-5700 San Luis, Argentina.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:24
英文摘要	In the hilly semi-arid region of central Argentina, where the agricultural frontier expands at the expense of natural ecosystems, soil erosion is one of the most alarming environmental problems. Thus, obtaining knowledge about the dynamics of erosive processes and identifying erosion hotspots constitutes a primary scientific objective. This investigation is focused on estimating the apportionments of main sources of sediments, at the mouth of a small catchment called Durazno del Medio, located in the province of San Luis, Argentina. Elemental Analysis, measured by Energy Dispersive X-ray Fluorescence (EDXRF), was used to select potential geochemical fingerprints of sediment. The unmixing model MixSIAR was applied to approximate the contribution of each identified source in the sediment accumulation areas at the mouth of the catchment. Potential sediment sources were selected using two criteria: (i) a hierarchical approach to identify the main geomorphological units (GUs) and (ii) the main land uses (LU), recognized by examining satellite images and field recognitions. The selected geochemical tracers were able to distinguish sources located in the Crystalline basement hills with loess-patched (CBH) as the main sediment contributors.
英文关键词	fingerprinting technique mixing models geomorphological units geochemical concentrations EDXRF
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:000743933900001
WOS关键词	RIVER
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/2XILL650/375722
作者单位	[Garcias, Yanina; Torres Astorga, Romina; Velasco, Hugo] UNSL, CONICET, IMASL, Grp Estudios Ambient, RA-5700 San Luis, Argentina; [Ojeda, Guillermo] UNSL, Dept Geol, RA-5700 San Luis, Argentina; [de los Santos Villalobos, Sergio] Inst Tecnol Sonora ITSON, Calle 5 Febrero,818, Obregon 85000, Sonora, Mexico; [Tejeda, Samuel] Inst Nacl Invest Nucl, Ocoyoacac 52750, Mexico
推荐引用方式 GB/T 7714	Garcias, Yanina,Torres Astorga, Romina,Ojeda, Guillermo,et al. Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina[J],2021,13(24).
APA	Garcias, Yanina,Torres Astorga, Romina,Ojeda, Guillermo,de los Santos Villalobos, Sergio,Tejeda, Samuel,&Velasco, Hugo.(2021).Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina.WATER,13(24).
MLA	Garcias, Yanina,et al."Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina".WATER 13.24(2021).