Clasificación de humedales de montaña (Vegas) en los Andes Centrales de Argentina
; Martinez Carretero, Eduardo Enrique
; Perucca, Laura Patricia A. 
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Fecha
02/2022
Editorial
Sociedad Argentina de Botánica
Revista
Boletín de la Sociedad Argentina de Botánica
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Institución organizadora
ISSN
0373-580X
eISSN
1851-2372
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Español
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Resumen
Introducción y objetivos: El objetivo de este trabajo fue clasificar las vegas en los Andes Centrales entre los 28° y 53°S, con base en la geomorfología y la hidrología. Además, se buscó caracterizar las vegas del área de estudio en base a la superficie, altura y pendiente según tipología. M&M: La determinación de las distintas tipologías se realizó en base a un enfoque biofísico integrado a distintas escalas espaciales, donde se identificó las vegas y se determinó su vinculación con la hidrología y geomorfología. Se determinaron los tipos de escurrimientos dominantes y las unidades geomorfológicas. Se utilizaron imágenes satelitales ALOS- AVNIR-2, Landsat 5 TM y datos de campo. Resultados: Se identificaron 304 vegas que están determinadas por la unidad geomorfológica (planicies fluviales, abanico aluvial, ladera, piedemonte indiferenciado, depresión sin descarga superficial con o sin agua y falla) y el tipo de escurrimiento dominante (superficial lineal, subsuperficial mantiforme y subsuperficial mantiforme a superficial lineal). Se reconocen cuatro tipologías de vegas: Ribera, Ladera, Depresión y Falla. La tipología de Ribera y de Ladera fueron las dominantes en cuanto a número y superficie. La altura y la pendiente no resultaron diferentes entre tipologías. Conclusiones: Las vegas en los Andes Centrales responden a 4 tipologías: Ribera, Falla, Ladera y Depresión. Existe una estrecha relación entre las vegas, la geomorfología y el escurrimiento dominante, lo que permite clasificarlas y analizar distintas medidas de manejo. Los resultados obtenidos son un aporte al estudio de ecosistemas de alto valor ecológico y socio-económico en la región.
Background and aims: The objective of this work is to classify mountain wetlands (vegas) in the Central Andes between 28° y 53°S, based on geomorphology and hydrology. In addition, it seeks to characterize and determine the area, height, and slope of the vegas in each typology. M&M: The determination of the different typologies was carried out based on an integrated biophysical approach at different scales of spatial analysis, where the vegas present in the study area were identified and their link with hydrological and geomorphological aspects. The dominant runoff types, and the geomorphological units were determined. Satellite images ALOS- AVNIR-2, Landsat 5 TM and field data were used. Results: A total of 304 vegas were identified that are determined by the geomorphological unit (river plains, alluvial fan, hillside, undifferentiated foothills, depression without surface discharge with or without water and fault) and the dominant type of runoff (linear surface, mantiform subsurface and subsurface mantiform to superficial linear). Four typologies of vegas are recognized: Riverbank, Hillside, Depression and Fault. The Riverbank and Hillside typologies were dominant in number and area. Eight and slope did not result different between typologies. Conclusions: The vegas present in the Central Andes respond to 4 typologies: Riverbank, Fault, Hillside and Depression. There is a close relationship between vegas, geomorphology and the dominant runoff, allowing their classification and to analyze different management measures. The obtained results are a contribution to the study of ecosystems of high ecological and socio-economic value in the region.
Background and aims: The objective of this work is to classify mountain wetlands (vegas) in the Central Andes between 28° y 53°S, based on geomorphology and hydrology. In addition, it seeks to characterize and determine the area, height, and slope of the vegas in each typology. M&M: The determination of the different typologies was carried out based on an integrated biophysical approach at different scales of spatial analysis, where the vegas present in the study area were identified and their link with hydrological and geomorphological aspects. The dominant runoff types, and the geomorphological units were determined. Satellite images ALOS- AVNIR-2, Landsat 5 TM and field data were used. Results: A total of 304 vegas were identified that are determined by the geomorphological unit (river plains, alluvial fan, hillside, undifferentiated foothills, depression without surface discharge with or without water and fault) and the dominant type of runoff (linear surface, mantiform subsurface and subsurface mantiform to superficial linear). Four typologies of vegas are recognized: Riverbank, Hillside, Depression and Fault. The Riverbank and Hillside typologies were dominant in number and area. Eight and slope did not result different between typologies. Conclusions: The vegas present in the Central Andes respond to 4 typologies: Riverbank, Fault, Hillside and Depression. There is a close relationship between vegas, geomorphology and the dominant runoff, allowing their classification and to analyze different management measures. The obtained results are a contribution to the study of ecosystems of high ecological and socio-economic value in the region.
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