Knowledge Resource Center for Ecological Environment in Arid Area
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
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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). |
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